Answer:
Normally, meiosis causes each parent to give 23 chromosomes to a pregnancy. When a sperm fertilizes an egg, the union leads to a baby with 46 chromosomes.
But if meiosis doesn’t happen normally, a baby may have an extra chromosome (trisomy), or have a missing chromosome (monosomy). These problems can cause pregnancy loss.
Mitosisis the dividing of all other cells in the body. It’s how a baby in the womb grows. Mitosis causes the number of chromosomes to double to 92, and then split in half back to 46. This process repeats constantly in the cells as the baby grows. Mitosis continues throughout your lifetime. It replaces skin cells, blood cells, and other types of cells that are damaged or naturally die.
During pregnancy, an error in mitosis can occur. If the chromosomes don’t split into equal halves, the new cells can have an extra chromosome (47 total) or have a missing chromosome (45 total).
If gametes were produced instead by mitosis each gamete would be diploid not haploid. During fertilization of diploid gametes, the zygote would become 4n=92. With each new generation the number of chromosomes would double.
List 3 ways the alveoli are built in a specialized way to do their job.
Answer:
Alveoli are tiny, balloon-shaped air sacs. Their job is to move oxygen and carbon dioxide (CO2) molecules into and out of your bloodstream.
Explanation:
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Differentiate between biotic and abiotic components.
Non-living physical and chemical elements in the ecosystem are referred to as abiotic factors. Typically, abiotic resources are obtained from the lithosphere, hydrosphere, and atmosphere [e.g. water, aer, soil, sunlight, and minerals].
Biotic factors are organisms that are alive or were onse alive in an ecosystem. These are obtained from the biosphere and have the ability to reproduce [animals, birds, plants, fungi, and other identical organisms].
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What is the temperature and name of the surface ocean current that affects the climate of location E (see map above)?
(1) warm Alaska Current
(2) warm Gulf Stream Current
(3) cool Peru Current
(4) cool California Current
Answer:
it is 4 the cool California Current
Explanation:
The temperature and name of the surface ocean current which affects the climate of the location E is the Cool California Current. Thus, the correct option is 4.
What is the Cool California Current?The California Current is called as an eastern boundary current. The strong current systems which flow along the east side or the boundary of all of the Earth's major ocean basins. These tend to move the water towards the equator, and they are prone to strong upwellings.
The temperature and salinity of the waters of the California current vary with the seasonal variations in the upwelling, insolation, and flow of the water. The maximum range in the temperature and salinity from its northern to its southern end are 48° to 79° F or 9° to 26° C and 32.5 to 34.5 parts per thousand, respectively.
Therefore, the correct option is 4.
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4. The main elements in Earth's crust are oxygen and
(5 Points)
O A. iron
O B. copper
O C. silicon
O D. nickel
Answer: C: Silicon
Explanation: Makes up 27.7% of Earths crust. Iron takes up 8.1% so I would say the answer is silicon.
Which of the following describes safeguards used in nuclear power plants to protect the environment? I. Radioactive sections of the plant are cleaned every week. II. Cooling the reactor prevents an explosion and leak of radiation. III. A mixture of different forms of uranium prevents explosions.
Answer: Cooling the reactor prevents an explsion and leak of radiation
Explanation:
Answer:
It's one and two
Explanation:
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HELP!!! will give brainliest!! need answer quickly!! An Ff mouse is bred repeatedly to an ff mouse, producing 500 total offspring. In theory, 250 offspring should be black and 250 should be white, but the actual numbers are 237 black and 263 white. Why does this happen?
How are the bodies of the three animals similar to one another? How are they different?
Answer:
How are animals similar? All animals are made of many cells. Most animals can move on their own. Like all living things, animals grow, change, reproduce, and respond to their environment.
Animals are made up of several cells. Most animals have independent movement. Animals develop, transform, reproduce, and react to their surroundings like all other living creatures do.
What are considered as animals?Any eukaryotic multicellular organism of the biological kingdom Animalia is referred to as an animal.
The majority of creatures in this kingdom lack a cell wall, are heterotrophic, motile, have specialised sensory organs, and originate from blastulae during embryonic development.
According to some, the fundamental distinctions between humans and other animal species are our capacity for complex reasoning, our use of complex language.
Also, the capacity for problem-solving, and the capacity for introspection (this means describing your own thoughts and feelings).
Multiple cells make up an animal. The majority of animals can move on their own. Like all other living things, animals grow, change, reproduce, and respond to their surroundings.
Thus, this way, many animals contrasts each other.
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Which of the characteristics is common to both arthropods and annelids and suggests that the two groups shared common ancestry?.
Answer:
Body segmentation
Explanation:
Both arthropods and annelids have body segments, which serves as evidence for them being close evolutionary relatives.
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Which subgroup of dinosaurs’ name means “shield bearer”?
A. sauropodomorphs
B. thyreophora
C. ceratopsians
D. ornithopods
Answer: B) thyreophora
What are the two factors that determine the boundaries of a biome?.
Answer:
temperature and precipitation
________ exists when the immune system does not respond to a particular antigen.
Answer:
tolerance exists when the immune system does not respond to a particular antigen.
How is oxygen in the air made during photosynthesis?
A. Splitting apart carbon dioxide
B. Attaching oxygen together
C. Attaching water together
D. Splitting apart water molecules
Answer:
D
Explanation:
by process known as photolysis
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answer this
Name one organism that is selectively bred.
Answer: Crop plants with better yields. ornamental plants with particular flower shapes and colours. farm animals that produce more, better quality meat or wool. dogs with particular physiques and temperaments, suited to do jobs like herd sheep or collect pheasants.
Explanation: hope it helped :)
Which part of the body is the maxilla bone located?.
Answer:
upper jaw
Explanation: The maxilla is the bone that forms your upper jaw. The right and left halves of the maxilla are irregularly shaped bones that fuse together in the middle of the skull, below the nose, in an area known as the intermaxillary suture. The maxilla is a major bone of the face.
A chronic condition that causes permanent damage to the glomerular membrane, resulting in renal failure is.
Answer:
Chronic glomerulonephritis
Explanation:
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Describe two similarities between bacterial cells and animal cells
You are a genetic counselor. Cherry is looking into her genetic history, and she is asking you to figure out who has or had color blindness by looking at her family tree. The image below shows a pedigree chart, and it represents the inheritance of color blindness through three generations.
Are females #1, #2, and males #1, #2, colorblind or not?
With the information provided it is not possible to determine if females #1, #2, and males are colorblind or not are colorblind (they can be colorblind or carriers).
What a pedigree?A pedigree is a diagram to represent the genealogical relationships within a family and the inheritance of certain traits.
In a pedigree, the presence of a complete shadow figure indicates the presence of the genetic condition.
In this case, the females #1, #2, and males #1, #2, can be either colorblind or carriers (i.e., heterozygous for the trait).
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there are different states of matter and each has a distinct characteristics. if ever you'll compare yourself to these states, what would you be and why?
plss help me
Answer:
A human is a solid
Explanation:
We have a definite shape and higher density than liquid or gas
What are the three events of Photosynthesis?
Answer:
(i) Absorption of light energy by chlorophyll.
(ii) Conversion of light energy to chemical energy and splitting of water molecules into hydrogen and oxygen.
(iii) Reduction of carbon dioxide to carbohydrates.
I expect that this might help you out.
Explanation: The process of Photosynthesis is simple.
The three events that take place in "Photosynthesis", are:
1. Absorption of light energy by chlorophyll.
2. Conversion of light energy to chemical energy and splitting of water molecules into hydrogen and oxygen.
3. Reduction of carbon dioxide to carbohydrates.
Definition of Photosynthesis: The process by which plants and other organisms use sunlight to synthesize foods from carbon dioxide and water.
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Explanation:
sunlight A suntranspiration E soilWhich food chain correctly shows the direction that energy and matter can flow through a temperate forest ecosystem?
a) fruit > insect > sparrow > hawk
b) hawk > fruit > insect > sparrow
c) insect > sparrow > hawk > fruit
d) insect > hawk > fruit > sparrow
Answer:
Fruit comes from plants, which are producers. Insects are primary consumers, sparrows are secondary consumers, and hawks are tertiary consumers.
Explanation:
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Humans can over use the land which can speeds_____________ and could possibly lead to the land not being able to be used as farmland
Answer:
mathematics
life sciences
When should dna be replicated? what life events would include dna replication?.
Answer:
During growth and development i.e, as you get bigger because the cells are multiplying in number.
During repair of worn out cells and tissues e.g if you get a cut.
(It also happens in your hair and skin, but, I wouldn't label these as "life events"
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Which of these methods of waste management is most likely to release
heavy metals and other toxins into the air?
A. Burying
B. Dumping
C. Incinerating
D. Composting
Answer: Incinerator will be ur answer
If there is a change in a squid's messenger RNA, will this change appear in its genetic material? Will it be inherited by its offspring?
If there is a change in a squid's messenger RNA, this change does not appear in its genetic material. This change neither will be inherited by its offspring.
What is messenger RNA?During gene transcription, a fragment of DNA called gene is used as template to generate a messenger RNA (mRNA).
Subsequently, this mRNA is used as a template to create a protein by a process known as translation.
The mRNA is a molecule that carries the genetic material from DNA to protein but this process does not modify the genetic material.
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What is the first classification?
O Kingdom
O Domain
O Genus
O Family
Answer:
Kingdom
Explanation:
This is the order of classification
Kingdom
Phylum
Class
Order
Family
Genus
Species
rays of the sun hitting your face. is it potential energy kinetic energy or both
Answer:Radiant energy is a form of kinetic energy so it is Kinetic energy .
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what is one experinment that is realted to put cabbage water, baking soda, and vinegar experinment and explain why you chose that idea!
Pea plants can have yellow seeds or green seeds. which conclusion about the meaning of y is correct if the allele combination yy is for yellow seeds? yellow and dominant green and recessive yellow and recessive green and dominant
Pea plants can have yellow seeds as the meaning of y is correct if the allele combination yy is for yellow seeds are yellow and dominant.
This question involves a seed color gene, which has two alleles Y and y. Y, which represents the dominant allele codes for the YELLOW trait while y which represents the recessive allele codes for the GREEN trait. Therefore, a plant with Yy will have YELLOW SEEDS because the dominant Y allele is present.
What are two alleles?Gregor Mendel has stated that a gene comes with two alleles. According to his law of dominance, one of the alleles called the DOMINANT allele is capable of masking the phenotypic expression of another allele called the RECESSIVE allele.
Thus it is clear that yellow and dominant are the meaning of y is correct if the allele combination yy is for yellow seeds.
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Answer:
its A yellow and dom
Explanation:
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