The expected genotypic ratio of their children is 2Rr:1rr:1RR.
What is Genotype?This can be defined as the genetic composition of an organism. Since Sam and Tracy possess heterozygous traits, their genotypes will be Rr and Rr.
When this is crossed , we will get :
Rr × Rr
RR Rr Rr rr
This means the genotypic ratio will be 2Rr:1rr:1RR.
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Which of the following is in the correct order from simplest to most complex cells tissue organ systems organs organisms
Answer:The highest level of organization for living things is the biosphere; it encompasses all other levels. The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.
Explanation:
The major levels of organization in the body, from the simplest to the most complex are: cells, tissues, organs, organ systems, and the human organism.
What is the simplest level of body organization?The human body is made up of atoms, cells, tissues, organs, and organ systems. The chemical level, which is the simplest, is made up of atoms. Cells are the smallest units of life that can do work.
Similar cells form tissues. The main types of tissues are epithelial, muscular, connective, and nerve.
Organs are structures made up of at least two types of tissue that do specific jobs in the body. The liver, the stomach, the brain, and the blood all do different things. Organs help the body perform functions.
Then come the organ systems. A system of organs is a group of organs that work together.
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Which of the following choices correctly orders the flow of energy during the swampland leaf experiment?
Explanation:
you need to give us the choices
Answer:
Explanation:
It forms from an equal amount of potential energy.
Electronegativity increases when atoms
A. are located on the right on the periodic table
B. are located on the left on the periodic table
c. have a large atomic radius
D. have a small atomic radius
Answer:
A. and D.
Explanation:
If we go horizontally, from the left to the right on the periodic table, the electronegativity increases.
If the radius is small, that means the electrons are closer to the nucleus, which makes them more electronegative.
Which of the following is true about the Calvin cycle?
Rubisco fixes O2 to a carbohydrate molecule.
Both ATP and NADPH are needed to make sugars.
Light energy is converted to chemical energy.
Answer:
Both ATP and NADPH are needed to make sugars
The true statement about the Calvin cycle is: Both ATP and NADPH are needed to make sugars.
CALVIN CYCLE:
The Calvin cycle is also known as light independent reactions or dark reaction of photosynthesis. It is the second stage of the photosynthetic process where glucose is synthesized. The Calvin cycle makes use of the products of the light dependent reaction namely: ATP and NADPH.ATP and NADPH are used to synthesize glucose molecule. In the process of Calvin cycle, carbon dioxide (CO2) is fixed and not oxygen. Therefore, the true statement about the Calvin cycle is: Both ATP and NADPH are needed to make sugars.Learn more at: https://brainly.com/question/3199721?referrer=searchResults
Why is the pollution of the chang jiang a significant problem in china?.
Answer:
China's economy depends on it's freshwater fishing industry.
Explanation:
According to the gate control theory, what is one reason we are able to block the perception of pain?
Answer:
Gate theory claims that pain sensations must pass through a space, or gate, in the spinal cord, which can be closed to block pain signals sent from the brain or peripheral receptors.
Explanation:
According to the gate control theory, the activities of large fibres cause the excitation of inhibitory neurons. This reduces the transmission of pain signals.
What is gate control theory?
This is a type of defence mechanism by our nervous system. In this mechanism, the signals that are sent to the brain, by the spinal cord for the perception of pain, are managed by the spinal cord itself.
This may include the mechanism of reducing or increasing the pain. Therefore, the gate theory can heighten or decrease the perception of pain meaning the gate can either be closed or it can be open. The pain signals will pass to the brain if the gate is open and they will be restricted to the spinal cord if the gate is closed.
A painful or noxious stimulus of pain can be restricted or managed by a non-noxious stimulus. Like a backache can be managed by a gentle back massage.
Therefore, a gate control mechanism helps in blocking the perception of pain in the spinal cord.
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Plants have openings on their leaves called stomata, through which gases, including water vapor, can pass in and out of the plant. Plants open and close stomata in order to regulate the exchange of gases with the atmosphere. Why might it benefit plants to keep their stomata closed under certain conditions?
Plants open and close stomata in order to regulate the exchange of gases with the atmosphere. It benefits plants to keep their stomata closed under certain conditions is to conserve water and to prevent damage from excess light and high temperatures.
What is stomata?
Stomata are tiny pores on the surface of the leaves that allow plants to exchange gases such as carbon dioxide and oxygen.
When stomata are open, water vapor can escape from the plant, leading to transpiration. In a condition of drought and high temperatures, closing stomata can help the plant conserve water.
When light intensity is too high, closing stomata can help the plant protect the plant from stress.
Therefore, closing the stomata can help the plant conserve water and prevent damage from excess light and high temperature.
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for
5. A photoheterotroph uses
for energy and
carbon
a. Light, organic molecules
b. Organic molecules, Organic molecules
c. Organic molecules, Light
d. Light, Light
Explanation:
c and a are same
the answer is a or c
you are driving car ahead lose control and go off road and hit a tree, when I get to car driver is slump over the steering wheel his arm was twisted in bad way there was baby in rear seat crying. what is the first aid action to take
Answer:
to close the car with key
Explanation:
remove the baby from the car firstly and place him or her nearby somewhere safe then remove the injured person from the car carefully , though of course it would be weird if a stranger takes the baby from your(For instance) car so firstly confirm if the driver is conscience and assure him or her everything is gonna be okay remove them both from the car by first taking the baby of then the injured person. confirm if baby is okay. Next position the persons injured arm straight then secure this position tying sticks around the arm
NB: this explaination is based on years of watching movies but can you please give me brainliest. please comment me the correct answer thank you very much
What part of the reproductive system is highlighted below?
A. Urethra
B. Vas deferens
C. Seminal vesicles
D. Epididymus
Answer:
Urethra and vas deferens
Explanation:
they are found in male reproduction part
The highlighted part in the image appears to be the Vas deferens.
This is the vas deferens, which is a tube that carries sperm from the epididymis to the urethra during ejaculation. The vas deferens is a part of the male reproductive system and is located in the spermatic cord that runs from the testicles through the inguinal canal and into the abdominal cavity.
It is one of the tubes that are cut or blocked during a vasectomy procedure, which is a form of male contraception in reproductive system.
The vas deferens is surrounded by smooth muscle, which helps propel the sperm towards the urethra during ejaculation.
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WHICH STATEMENT IS the strongest evidence in support of endosymbiotic theory of eukaryote evolution
Answer:
Please see my answer below.
If you like my response you can mark it as brainliest.
If you have any doubts (no joke) you can reach out to me in the comments.
Explanation:
The endosymbiotic theory states that some of the organelles in eukaryotic cells were once prokaryotic microbes. Mitochondria and chloroplasts are the same size as prokaryotic cells and divide by binary fission. Mitochondria and chloroplasts have their own DNA which is circular, not linear.
movement through the cell cycle is not controlled in the cells?
True or False
Answer:
False is the correct answer
Cell-cycle control is entirely dependent on post-transcriptional mechanisms such as phosphorylation of Cdk activity and the binding of regulatory proteins such as cyclins, which are themselves regulated by proteolysis.
movement through the cell cycle is not controlled in the cells is True.
What regulates the movement of a cell through the cell cycle?In addition to this structural function, the cytoskeleton is in charge of cell movement. Internal transport of organelles and other structures (such as mitotic chromosomes) through the cytoplasm is one of these.Cell-cycle control is entirely dependent on post-transcriptional mechanisms such as phosphorylation of Cdk activity and the binding of regulatory proteins such as cyclins, which are themselves regulated by proteolysis.Disruption of normal cell cycle regulation can result in diseases such as cancer. When the cell cycle is uncontrolled, cells can divide haphazardly and accumulate genetic errors, which can result in a cancerous tumor.To learn more about : Cell cycle
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calculate the circular cross-section of the deep water horizon pipe.
The circular cross-section is the concentric circle of the pipe. It can be calculated by using the diameter values or the ratio values.
How to calculate the circular cross-section of a pipe?
When talking about circular cross-sections we are referring to the concentric circle resulting from the intersection between the pipe and a plane.
To calculate the cross-section area, Ac, we need to know either the values of the diameters or the ratios.
the values of the inner and outer diameters, D and d.The formula to calculate it is Ac = π * (D² - d²) / 4
the inner and outer ratio values r, r1 and r2.
The formula is Ac = π * (r₁² - r₂²)
According to the provided information in your problem statement, use any of these formulas to calculate the circular cross-section of the deep water horizon pipe.
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Which statement best describes why the body tries to maintain homeostasis?
- The body must maintain homeostasis so that the internal environment matches the
outside environment
- The body must maintain homeostasis so that the internal environment stays the same if the outside environment changes.
- The body must maintain homeostasis to make sure that a person’s heart and respiration rates are the same.
****Its the second one, (just took test) im just posting for other peeps****
Answer: The body must maintain homeostasis so that the internal environment stays the same if the outside environment changes
which outcomes are a result of exposure to a toxin?
l. Cancers
ll. Birth defects
lll. Fatigue
PLEASE ANSWER SHOULD BE CORRECT ⬇️
A. l only
B. l and ll
C. ll and lll
D. l, ll and lll
Answer:
l and ll is the answer for the question
Answer:
I and II
Explanation:
exposure to toxics cause increased chances of birth defects and increases the chances of cancers.
Bryophyllum ; Leaf : : _______; root
Answer:
stem? pretty sure
Explanation:
In 1915, the scientist Thomas Hunt Morgan discovered that certain genes on chromosomes are associated with specific traits in fruit flies. However, the mechanism through which this process occurs was not detailed until 1966. That is when Marshall Nirenberg and several other scientists demonstrated that specific sequences of nucleotides in DNA correspond to specific proteins. After gene sequencing was introduced in 1977, scientists were able to use Nirenberg's discoveries to predict an organism's proteins from its DNA sequences.
How does the information above illustrate the nature of science?
A.
It shows that scientific progress is made primarily through observational rather than experimental evidence.
B.
It shows that earlier scientific ideas are typically incorrect since genes code for proteins and not traits.
C.
It shows that scientific ideas are durable but are developed as new data are collected.
D.
It shows that scientists like Nirenberg did not rely on ideas of others in making major discoveries.
Compare and contrast open, closed, and isolated systems. Be sure to discuss the exchange of energy and exchange of matter, and provide at least one example of each
Answer:
Open, Closed, and Isolated Systems
A closed system does not allow matter to enter or leave, but does allow energy to enter or leave. A covered pot on the stove is approximately a closed system. An isolated system does not allow either matter or energy to enter or leave
Explanation:
Which of the following best explains how higher concentrations of nitrogen and phosphorus contribute to eutrophication?
Answer:
See the answer below
Explanation:
It seems that you forgot to include the options for the question.
Nevertheless, one of the best explanations for how higher concentrations of nitrogen and phosphorus contribute to eutrophication is the fact that after light, both nutrients represent the most important limiting factor for algal growth. The overabundance of these two nutrients leads to the stimulation of the growth of various algal species present in the ecosystem, eventually causing what is referred to as algal bloom.
Apart from constituting a nuisance to waterways, the bloom of algae causes a host of problems to the environment which include the blockage of sunlight from getting to water bodies, the release of toxins into water by algal species, hypoxia of water bodies, and eventual death of aquatic species.
Which of the following plants would be found in a tropical rainforest? A.orchid B.wheat C.barley D.cactus NEXT QUESTION ASK FOR HELP
Answer:
A. Orichid
Explanation:
I took the test
12. Your body normally maintains a temperature of 98.6°F. This is an example of what?
Answer: This is an example of Homeostasis!! :D
Explanation:
PLEASE ANSWER QUICKLY BRANLIES AND 100 POINTS WHOEVER ANSWERS PROPERLY.
Write a “lifeline” of a robin over the first year of its life. Include important events.
Explanation:
Robins are born in the spring or summer and are mature birds and ready to breed in the following spring or summer. They do not mate for life. Pairs usually remain together during an entire breeding season, which can involve two or three nestings. However, in spring, sometimes a male and female who mated the previous year will both return to the same territory and end up together for another year. This happens most frequently when they were successful raising babies the previous year. Robins lay one egg per day, for a total of 5–6 eggs in a clutch. The eggs hatch about 12 - 14 days after the last egg was laid. Baby robins jump from their nest when they are about 13 days old, but the range is 9 - 16 days. After leaving the nest (fledging), it takes another 10-15 days for babies to become strong fliers and independent birds. The parents continue to feed their young during this period.
Most robins die their first year. But the lifespan goes up dramatically for the ones that survive this critical time, because they've learned so many important life skills. Of those that survive their first year, most wild robins live to be about 5 or 6. As of February, 2001, the longest-living banded wild robin ever recorded had survived 13 years and 11 months, according to the Bird Banding Laboratory at the Patuxent Wildlife Research Center. In captivity, robins have survived longer than 17 years.
Answer:
In the spring, robins travel north and mate. Much chirping and singing go on among the robins before they mate. The eggs are fertilized inside the female's body. Newborn robins are nearly helpless. Their eyes are closed. They cannot feed themselves, so their parents get insects and bring them to the young. When another animal or bird gets near the nest, the parents protect the young robins. After the little robins grow enough to survive on their own, they are pushed from the nest by the parents.
Explanation:
An organism with a allele will only exhibit that allele when a dominant trait is present
Answer:
True
Explanation:
Are you asking for true of false?
A female rabbit had eight babies. Four of the babies was black and four was white. In rabbits, the allelle for black fur B is dominant to the allele for white fur b. What genotype in the mother and father rabbits could produce this outcome in the phenotypes of their offspring. Write a scientific explanation that explains the genotype of the female and male rabbits.
Compare the growth of normal cells with and without growth factors.
Answer:
In contrast to normal cells, cancer cells don't stop growing and dividing, this uncontrolled cell growth results in the formation of a tumor. Cancer cells have more genetic changes compared to normal cells, however not all changes cause cancer, they may be a result of it (:
Explanation:
hope this helped <3
Is this a frameshift mutation
1.No because the nucleotides/nitrogen bases did not move
2.No because the amino acids did not change
3.Yes because the nucleotides/nitrogen bases moved
Answer:
3 yes because the nucleotides/nitrogen bases moved
Rainforests are very biodiverse, meaning they ________.
are found all over the world
have several days of precipitation throughout the year
have many different kinds of plants and animals
have several different types of atmospheric gases
Answer:
I don't know for sure but I think it's, "have many different plants and animals."
Explanation:
It's sound rite?
Answer:have many different kinds of plants and animals
Explanation:
In general, when recombination experiments are conducted with bacteria, participating bacteria are mixed in complete medium, then transferred to a minimal growth medium. Why isn't the protocol reversed: minimal medium first, complete medium second?
We can confirm that if we used a minimal medium first and attempted to transfer from that to a complete medium second, certain types of bacteria would not be able to survive the first medium.
What bacteria would be affected?This has to do with many kinds of bacteria, but particularly auxotrophs. These are bacteria who have trouble producing the substances they need to survive, so in an incomplete medium, these bacteria would not have a high chance to survive until moved to the complete medium.
Therefore, we can confirm that if we used a minimal medium first and attempted to transfer from that to a complete medium second, certain types of bacteria would not be able to survive the first medium.
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choose one ecological relationship, define it, and give one original example that is not found in the lesson
Answer:
Ecological Relationships
Explanation:
Answer
There is a type of bird known as the honey bird in Africa. It actually guides people to bees nests so they can have honey, then once the people are gone it eats the honeycomb.
Explanation:
What was the NEGATIVE effect of the oil embargo?
A: The price of fuel increased
B: Americans started using more renewables
C: Americans began using energy less efficiently