Smoking cigarettes and being exposed to secondhand tobacco smoke are leading causes of premature death.
death that occurs earlier than the typical death age for a population. The average death age is around 75 years old. The biggest causes of early death in the US are smoking cigarettes and being around people who smoke. They can make people more vulnerable to developing cancer, heart disease, stroke, lung disease, and a host of other illnesses. Injuries are another reason for early mortality.
Ischemic heart disease, which accounts for 16% of all fatalities worldwide, is the world's leading cause of mortality. This disease has shown the highest increase in deaths since 2000, with an increase of more than 2 million deaths to 8.9 million deaths in 2019. The second and third most common killers, stroke and chronic obstructive pulmonary disease, respectively account for 11% and 6% of all fatalities.
Lower respiratory infections remained to be the most fatal communicable disease worldwide, ranking as the fourth most common cause of death. However, there have been fewer fatalities; in 2019, it claimed 2.6 million lives, 460 000 fewer than it did in 2000.
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What are two factors that increase the genetic variation in a population ?
Gene flow and genetic drift are two factors that increase the genetic variation in a population.
Genetic variations are the changes or alterations which can occur in the sequence of gene of the DNA. These genetic variations are very necessary as they enable different living beings to evolve and also survive. There are two factors which can cause an increase in the genetic variation of a particular population and they are gene flow and genetic drift.
Gene flow can be defined as the movement of genes which occurs in and out of a specific population. The in-flow of genes in a population can help increase the genetic variation of the individuals that are a part of that population. Genetic drift is defined as the change in allelic frequency of a population which occurs by chance. It brings about genetic variation.
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Which of the following conclusions about the radiolabeled amino acid is best supported by the results of the experiment
It was largely integrated into proteins that control and oversee metabolic processes.
Amino acid molecules comprise proteins. Proteins and amino acids are the building blocks of life. After proteins have been digested or denatured, amino acids are still present. In order to maintain the body, the human body makes proteins from amino acids:
The body can produce energy from amino acids to digest food, grow, repair bodily tissue, and carry out a variety of other bodily functions.
Amino acids are divided into three groups:
Important amino acids
Unneeded amino acids
conditional amino acids
Amino acids are necessary for the synthesis of body protein as well as other essential nitrogen-containing compounds like creatine, peptide hormones, and certain neurotransmitters. Even though allowances are portrayed as meeting biological needs, amino acids.
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PBS Evolution: Great Transformations
1. If the world’s history were compressed into one hour, how long have humans been here?
Microbes. Single-celled organisms
2. How long ago did mammals first appear on earth?
Mammals first appeared about 200 million years ago
3. What type of animal did the skull that Dr. Gingrich discovered resemble?
Dr. Gingrich discovered resembled a whale
4. What did "Whale Valley" used to be?
Whale valley is a
5. What unusual feature did they find at the end of the early tetrapods’ limbs?
6. How long ago did animals first appear on Earth?
7. When the mouse "eyeless" gene was implanted into the fruit flies, what happened?
8. How would walking on two legs be an advantage?
9. What modifications does the human skeleton have?
Humans has the same transformation as other animals even though humans are special.
10. Summary/reflection:
Given that whales and other mammals resembled other mammals in terms of their skulls and other sculptures, based on the fossil evidence, humans have undergone evolutionary transitions.
The transition from land animals to whales is one of the most well-known instances of a supposed change cited by the evolution contingency in the opening of the program. The fossils of Pakicetus, Ambulocetus, Rhodocetus, Dorontid, and Basilosaurus show that this transition can be explained. Pakicetus only has a small portion of its cranium to display, as opposed to a whole transitional fossil.
The program portrays Ambulocetus as a fully preserved fossil of an aquatic mammal with legs, yet this is a stretch of the fact because the animal's skeleton was actually discovered to be extremely fragmented. Rhodocetus is solely represented in the series by a skull.
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Drag the tiles to the correct boxes to complete the pairs.
Match the inheritance patterns with the scenarios that exemplify them.
codominance
multiple alleles
incomplete dominance
A pink roses are formed when red roses are mated with white roses.
Genes with the alleles IA, IB, and i are responsible
for expression of A, B, and O blood types.
A red flower and a white flower produce
an offspring with equal proportions of red
and white coloration.
In co-dominance alleles are equally expressed, while in incomplete dominance neither of the alleles are completelly expressed. Multiallelic genes are those that have more than two alleles as alternative forms. A) Incomplete dominance. B) Multiple alleles. C) Co-dominance.
What are codominance, incomplete dominance, and multiple alleles?
Codominance refers to a non-mendelian inheritance pattern in which two different alleles present in the same genotype are equally expressed.
There are no dominant or recessive alleles since non of them hides the expression of the other one in heterozygous individuals.
The phenotype of a heterozygote expresses two alternative phenotypic variants.
Incomplete dominance refers to another non-mendelian inheritance pattern in which heterozygous individuals express an intermediate phenotype between the dominant and the recessive phenotypes.
Neither of the involved alleles completely dominates over the other one.
Multiple alleles refer to genes that express more than two possible alleles. Let us remember that alleles are alternative forms of the same gene. So, multiallelic genes can have many alleles, and each of their codes for a different trait.
Pink roses are formed when red roses are mated with white roses ⇒ incomplete dominanceGenes with the alleles IA, IB, and i are responsible for expression of A, B, and O blood types ⇒ Multiple allelesA red flower and a white flower produce an offspring with equal proportions of red and white coloration ⇒ co-dominanceYou can learn more about co-dominance, incomplete dominance, and multiple alleles at
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Ue evidence from model to contruct an explanation about how carbon can form chain and ring tructure in biomolecule and how boimolecule are ued in cell procee
Biomolecules are used in cells to build cells and provide energy to cells.
Living organisms are built from the element carbon which has a mass of more than half the dry mass of their cells. Elemental carbon can form single bonds with hydrogen atoms, and double bonds with oxygen atoms or nitrogen atoms. The carbon atom is special because of its ability to form very stable bonds with other carbon atoms so that it can form very large molecules. Two carbon atoms can also be bonded together to form a double or triple bond.
Most biomolecules can be viewed as derivatives of carbonates, a group of compounds consisting only of the elements carbon and hydrogen, by replacing one or several hydrogen atoms with certain functional groups, resulting in various groups of carbon compounds with distinctive properties.
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What are 3 controllable and 3 uncontrollable risk factors?
Controllable risk factors are those that can be modified or changed through lifestyle choices or medical interventions. Uncontrollable risk factors are those that cannot be modified or changed.
Smoking is a major risk factor for many diseases, including lung cancer, heart disease, and stroke. Quitting smoking Controllable can significantly reduce the risk of these diseases. A diet high in saturated and trans fats, cholesterol, sodium, and added sugars Controllable can increase the risk of heart disease, risk factor stroke, and other chronic diseases. Eating a healthy diet that is rich in fruits, vegetables, whole grains, lean proteins, and healthy fats risk factor can lower the risk of these diseases. A Uncontrollable person's risk of certain diseases, such as heart disease and cancer, Uncontrollable risk factor can be influenced by their family history. Men have a higher risk of heart disease than women, while Uncontrollable risk factor women have a higher risk of osteoporosis and breast cancer.
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What will happen if the number of cells increase in a series circuit?
Increasing the number of cells increases the current in the circuit.
Connecting cells in series increases the voltage in the circuit by 1.5V per cell. Increasing the voltage will increase the brightness of the bulb. Unscrewing one bulb in a series circuit extinguishes all bulbs in the circuit. Increasing the number of incandescent lamps in a series circuit reduces the brightness of the incandescent lamps.
Increasing the number of cells increases the voltage (adding voltage to cells in series). A cell is a "power source". It converts stored chemical energy into potential energy, allowing positive charge to flow through an external circuit from positive to negative. This is known as current.
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Plant seedlings were treated with a range of concentrations of coumarin, a small organic compound. After one week, seedling height was taken as a measure of plant growth. In a separate experiment, stem tissue sections were taken from newly germinated seedlings and incubated in solutions containing 14C-glucose and coumarin. After 24 hours, the quantity of radioactive label in cytoplasmic and cell wall fractions was measured. All data are shown in the table above. Which statement is supported by these results
Coumarin is found to restrict the production of a specific component found in the cell walls but not in the cytoplasm, which plays an important role in the growth of the stem. (BIOSYNTHESIS< CYTO< STEM GROWTH)
The results from the experiment suggest that coumarin treatment negatively impacts the growth of plant seedlings, as measured by seedling height. This indicates that coumarin has an inhibitory effect on stem growth.
Additionally, the experiment that measured the number of radioactive labels in cytoplasmic and cell wall fractions revealed that coumarin affects the biosynthesis of a specific component in the cell walls but not in the cytoplasm. This suggests that coumarin specifically targets the production of a component that is critical for stem growth, and that this component is found primarily in the cell walls and not in the cytoplasm.
This is further supported by the fact that the radioactive label is found in the cell wall but not in the cytoplasm, indicating that the biosynthesis of this component is taking place in the cell wall and not in the cytoplasm. Overall, these results suggest that coumarin is inhibiting the biosynthesis of a component that is critical for stem growth, specifically in the cell walls.
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which sentence is an example of a run-on sentence as a scared for birds and their winter he can help by feeding them
When two separate clauses are combined without the required punctuation or conjunctions, the phrase becomes run-on.
Food is scarce for birds in the winter you can help by feeding them.
Comma splicing and run-on sentences are mistakes that go hand in hand. While a comma splice happens when a comma is used to divide two distinct clauses, a run-on sentence happens when numerous independent clauses are not punctuated or connected in a single phrase.
Run on means to continue: continue. To continue (stuff in type) without a pause or a new paragraph: transitive verb run in. : To add or add anything to the conclusion of a paragraphed item, such as an entry from a dictionary.
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It is easier to carry out a controlled experiment in the field than it is in the laboratory. True or false
Answer:
true
Explanation:
What is the probability that two parents with the genotype AaBb will produce an offspring with the genotype AaBb?
The probability of parents with the AaBb genotype producing offspring with the genotype AaBb is 4/16. Thus the correct answer is (b) 4/16.
The Punnett square method is used to forecast the prospective offspring from a certain cross based on the gametes of the parents. The parents carefully create the gametes that are arranged in a checkerboard pattern so they can understand all the potential children that can be generated. The likelihood of each prospective offspring can be determined using the checkerboard method. In the cross, there are four gametes produced by each of the two dihybrid parents. As a result, the hybrid has the capacity to produce a total of 16 offspring. Out of the 16 possible combinations, only four types of offspring can have the AaBb genotype.
Parents: AaBb*AaBb
Genotypes: AB Ab aB ab * AB Ab aB ab
Offspring: ABAB ABAb ABaB ABab AbAB AbAb AbaB Abab aBAB aBAb aBaB aBab abAB abAb abaB abab
Percentage: AaBb: 4/16
The complete question is:
What is the probability of an AaBb offspring when you cross AaBb x AaBb parents?
a. 1/2
b. 4/16
c. 1/8
d. 1/32
e. 1/4
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Why did Mendel choose pea plants 3 reasons )? How did these characteristics help make it easier for Mendel to figure out the patterns to heredity?
Mendel chose garden pea for his experiment because are bise-xual, self pollinating they have a shorter life span, and also have visible physical characteristics which made it easier to study them.
Mendel conducted a lot of experiments on plant breeding and gave the laws of inheritance. He selected garden pea for his experiments for three reasons which made it easier for him to figure out the patterns for heredity. The first reason is that the garden peas have a short life span due to which they are able to grow quickly and are therefore are easy to maintain.
The second reason is that the garden peas have bise-xual flowers and due to this reason they have the ability to self-pollinate. The third reason is that these plants have visible phenotypic characters which makes them easy to study.
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What kind of sex is prohibited in the Bible?
Sex outside of marriage is the kind of sex which is prohibited in the Bible and it is also considered as a sin.
Within Christian circles, it's assumed God only wants us to have sex if we are wedded. Sex outside of marriage is one of the clearest, irrefutable proscriptions in Christianity. If someone have sex outside of their marriage with someone else than it is considered as a great sin.
The Bible's origin is both mortal and godly — not just from God and not just from humans.That single author of Bible was believed to be Moses, the Hebrew prophet who led the Israelites out of prison in Egypt and guided them across the Red Sea toward the Promised Land.
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When describing DNA replication we say that DNA polymerase synthesizes the new strand in a 5' to 3' direction, moving down the template strand from 3' to 5'. Briefly explain why replication always proceeds in this direction
DNA replication occurs in a 5' to 3' direction because the enzymes used for replication, known as DNA polymerases, can only add nucleotides to the 3' end of an existing strand of DNA.
This is because the 3' end has an exposed hydroxyl (-OH) group which can be used to add to the growing strand of nucleotides. As such, the polymerase moves down the template strand from 3' to 5', adding new nucleotides in the 5' to 3' direction.
This ensures that the newly synthesised strand is complementary to the template strand, as newly added nucleotides are added in the same direction as the original strand.
Additionally, this directional synthesis also means that both strands of the DNA double helix can be synthesised simultaneously, with each strand serving as the template for the other. This ensures that the complete DNA molecule is correctly replicated in the same manner as the original strand.
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Explain how the tructure of a cell allow localization of reaction, protection from reactive molecule, and greater efficiency of cellular procee than a bacterial cell
A eukaryotic cell's structure allows for the localization of reactions because there are areas within the cell where particular enzymes colocalize.
Structural barriers are also used to protect against reactive molecules, and the division of work in this cell allows for greater efficiency of cellular processes than in a bacterial cell. In a eukaryotic cell, the phrase "subdivision of work" refers to the existence of several cell compartments, such as those connected to certain organelles that offer an appropriate medium for carrying out specific reactions, such as the presence of hydrolytic enzymes in lysosomes. As a result, according to the findings, division of labour is essential for eukaryotic cells to carry out various activities, which translates to greater metabolic efficiency when compared to bacteria.
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Beth and Eric, two veterinary assistants, are discussing their duties. Beth says the vet assistance will take the animals respiration rate and draw blood during a physical exam. Eric says the vet assistance will take the animals temperature, heart rate, weight and respiration rate during a physical exam. Who is correct
To evaluate your pet's hydration status, veterinarians will marginally lift the skin at the rear of the neck to perceive what amount of time it requires to adjust back properly (skin turgor test). A postponed skin tent can demonstrate a lack of hydration.
It gives data that assists with assessing the patient's actual status. The key parts are distinguishing the essential or introducing issue. Clinical history, ecological history, and checking on body frameworks are remembered for a decent history.
In clinical terms, "examination" signifies taking a gander at the individual or body part. It is the most important phase in an actual test.
While the turgor tension in many cells is intrinsically certain, it is negative in the xylem of a coming-to-pass plant. This isn't really to be expected since the xylem is a vascular tissue liable for the conduction of water and supplements from the roots up to the shoots and leaves.
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What happens during the reduction?
Common reduction techniques result in oxygen loss. For instance, the reduction reaction process is used to decrease ore.
To obtain metals, build electrochemical cells and transform ammonia into nitric acid. Redox reactions, or reduction-oxidation processes, are the simultaneous reduction and oxidation of chemical substances. Oxidized species lose electrons, whereas reduced species gain them. Even without oxygen present, oxidation can still take place. Oxygen has the chemical symbol O and an atomic number of 8. It belongs to the periodic table's chalcogen group and is a very reactive nonmetal.
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how do palientologists classify fossils how does this compare to the way that biologists classify living animals
Scientists may be able to predict which species will become extinct by studying fossils. Fossils can be utilized to reconstruct pedigrees and identify family traits.
Scientists can use fossils to determine the time scale over which traits evolved. Scientists can utilize fossils to learn about the traits of ancient animals. Paleontologists compare the properties of species from different historical eras.
They use this information to try to understand how creatures evolved over millions of years Paleontologists classify fossils using physical characteristics that correspond to the Linnaeus system, and the organism then names the genus and species in Latin. A paleontologist collects as many fossils as possible from a rock or silt.
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Which concept should be used to describe the functioning of the serratus anterior as it assists the anterior deltoid during shoulder flexion
Answer:
Synergist an agent that increases the effectiveness of another agent when combined with it.
Marine Biology Please Answer and Explain
Is Gause’s Principle accurate? Explain why or why not.
Gause’s Principle is accurate because he describes that two species with the same niche cannot exist in the same habitat which is true.
What is a Niche?This is a term which is referred to as a place or position that's particularly appropriate for someone or something, especially due to being very specific and different from others.
Gause’s Principle however states that two species with the same niche cannot exist in the same habitat which is true. This is because their coexistence will lead to a high degree of competition which could lead to a decrease in their survival rate in the ecosystem.
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How do I put links in APA style? Pls tell me
Answer:
Explanation: Citing a Link in the Bibliography APA Style List the author's last name followed by first initial, separated by a comma. If there is more than one author, but less than six, put a comma directly after the first initial and list up to two more names in the same fashion. An "&" symbol should be used in place of a comma before the last name listed.
Describe at least 4 concepts learned this unit in genetics. Explain why each concept is important. (Digital biology 10th grade)
Transcription and gene regulatory networks. coding and noncoding RNA mechanisms of action and function. protein synthesis are 4 concepts learned this unit in genetics.
What is genetics?
The study of genes and heredity, or how particular characteristics or traits are passed from parents to offspring as a result of changes in DNA sequence, is known as genetics. A gene is a section of DNA that has the instructions needed to create one or more molecules that support bodily function. A double helix, or corkscrew-shaped ladder, is how DNA is shaped. The bases are pairs of the four building blocks adenine, thymine, guanine, and cytosine, and the two ladder rails are referred to as the backbones. The instructions for constructing molecules, the majority of which are proteins, are included in the sequences of these nucleotides. According to researchers, there are around 20,000 genes in humans.
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Neurons respond preferentially to the right eye or the left eye. This phenomenon is referred to as _____.
a. hemispheric specialization
b. bilateral dominance
c. retinotopic disparity
d. ocular dominance
Neurons preferentially react to either the right or left eye. This characteristic is known as ocular dominance.
Ocular dominance, also known as dominant eye, occurs when one eye is used more than the other, when one eye has greater vision, or when one eye has stronger focus. Determining which eye is dominant might be useful for tasks that demand concentration on a goal. Baseball is one of these activities.
Ocular dominance, also known as eye preference or eye condition, is the proclivity to favor visual information from one eye over the other. This is analogous to right-handed or left-handed laterality. The dominant eye side and dominant hand side, on the other hand, do not always correspond. Identifying your dominant eye is essential while participating in activities like baseball, shooting range, or golf. Photographers can also improve their images by using their dominant eye. Shooters can better aim their targets using their dominant eye.
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Which among the following is the correct sequence of prophase I of meiosis?
A.Leptotene, pachytene, zygotene, diplotene, diakinesis
B.Leptotene, diplotene, pachytene, zygotene, diakinesis
C.Leptotene, zygotene, pachytene, diplotene, diakinesis
D.Leptotene, zygotene, diakinesis, diplotene
Answer: C
Explanation: Leptoten, zygotene, pachytene, diplotene, diakinesis
Can we run out of renewable resources? Explain.
Answer:
No
Explanation:
Some resources will practically never run out. These are known as renewable resources. Renewable resources also produce clean energy, meaning less pollution and greenhouse gas emissions, which contribute to climate change.
Examples are Sun, Wind, and Water. We will always have sunlight and wind, right? So no, renewable resources CANNOT run out, hence the 'renewable' part. They come from sources that are not depleted when used. Others, like biomass, come from sources that can be replenished.
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Individual that is hybrid For a particular trait contains what ?
An Individual that is a hybrid organism is heterozygous. This means that it carries two different alleles at a particular genetic position or locus.
What defines the trait of an individual?Traits can be defined by genes, environmental factors or a combination of both. Traits can be qualitative such as eye colour or they can be quantitative such as height or blood pressure. A given trait is part of an individual's overall phenotype. If an organism has one of the same type of allele on each of its chromosomes, that organism has a pure trait. If an organism has two different types of alleles on its chromosomes, that organism has a hybrid trait.
What is the genotype of a hybrid individual?The genotype of the F1 hybrid offspring is Aa or Bb. The hybrid is heterozygous for both active genes. The recessive effects of aa and bb have been completed in the hybrid by the inheritance of one dominant gene.
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1. Jim and his wife have been trying to have a baby. Their doctor ran numerous tests and concluded that Jim should wear looser fitting pants. Explain why this is probably good advice.
Wearing tighter fitting pants can restrict the blood flow to the reproductive organs, which can lower the sperm quality and make it more difficult to conceive. Looser fitting pants can improve the blood flow to the reproductive organs and help to increase the quality and quantity of sperm, making it easier for Jim and his wife to conceive.
Why did Mendel carry out an experiment to study inheritance of two traits in garden pea?
Mendel conducted research on inheritance using peas. Peas were selected because they had previously been used in research that was comparable, because they are simple to cultivate, and because they can be replanted annually.
Pea flowers typically self-pollinate because they contain both male and female parts, which are referred to respectively as stamen and stigma. Because of the process of self-pollination, offspring can be produced from a single plant even though the flowers do not open until later. Peas can also be manually cross-pollinated.
To do this, simply open the pea flower buds, remove the pollen-producing stamen, and then apply pollen from one plant to the stigma of another plant. This will prevent the peas from pollinating themselves.
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What condition are needed do an accurate radiometric date to be obtained form a mineral ample?
The necessary condition is that the mineral must remain closed since its formation.
Radiometric dating, radioactive dating, or radioisotope dating is used to date rocks and carbon with trace radioactive impurities.
Heat, pressure, and temperature do not affect isotope decay. Radiometric dating is reliable. This method dates igneous and metamorphic rocks that sedimentary stratigraphic correlation cannot. 300 natural isotopes exist.
The parent's half-life must be known and long enough for it to be present in significant amounts at the time of measurement for accurate radiometric dating. Thus, mineral samples require these conditions for radiometric dating.
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What can be known about Mendel's five part hypothesis it is an answer to a scientific question and is based mostly on H?
Mendel's five-part hypothesis, sometimes referred to as Mendel's principles of inheritance is a scientific explanation for how traits in living things are handed down from one generation to the next. It is mostly based on Mendel's observations and research on pea plants.
The dominance principle: Mendel noticed that although certain qualities (now known as recessive) were not expressed in the offspring, others (now known as dominant) were.
Mendel discovered that distinct features' determining factors now known as genes—separate during the development of reproductive cells (gametes) and reunite during fertilization. This is known as the concept of segregation.
Mendel discovered that the inheritance of one feature has no bearing on the inheritance of another, which is known as the independent assortment principle. Mendel discovered that when breeding true-breeding (homozygous) individuals, certain qualities remain constant while others change, and when breeding hybrid (heterozygous) people, other traits do not.
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