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pogonyaev
3 years ago
14

What's a chromosome

Biology
1 answer:
Katen [24]3 years ago
6 0
A chromosome is a strand of DNA that is encoded with genes. In most cells, humans have 22 pairs of these chromosomes plus the two sex chromosomes (XX in females and XY in males) for a total of 46.
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Enzyme found in retroviruses that produce dna from an rna template. True or False
grandymaker [24]

Answer:

<h2>True</h2>

Explanation:

1 .Reverse transcriptase (RT) is an RNA-dependent DNA polymerase enzyme which makes DNA from RNA..  

2. RT makes double-stranded DNA molecules from ssRNA ( single stranded RNA) molecule using it as a template.

3. Retroviruses like  HIV contain Reverse transcpritase (RT) enzyme, which uses the RNA molecule as template and make DNA from it and after that, virus make multiple copies of itself.

4. Reverse transcriptase enzyme make DNA reverse transcrptionally from RNA the process known as RNA dependent DNA polymerase.

5. It was  first discovered in retroviruses.

7 0
3 years ago
Small bone fractures that develop in response to repetitive, cumulative trauma are known as __________ fractures.
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Small bone fractures that develop in response to repetitive, cumulative trauma are known as stress fractures. These are fractures where bones are injured by overuse, they are commonly found in the spine, vertebrae, leg bones, feet, and the pelvis. They result from the accumulated trauma from repeated submaximal loading, such as running or jumping 
6 0
3 years ago
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12. Study the image of a chromosome. Which of the following statements about
weeeeeb [17]

Answer:

A. Each half of the chromosome is genetically identical.

3 0
3 years ago
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Natural selection is based on Darwin’s observation that individuals most likely to survive and reproduce are those _____.
mariarad [96]

Answer:

Explanation:

Natural selection is based on Darwin’s observation that individuals most likely to survive and reproduce are those with traits best suited to their current environment.

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3 years ago
the increase of carbon dioxide in the atmosphere has had an effect on the earths climate. What is that effect?
Phoenix [80]
The increase of carbon dioxide in the atmosphere creates a greenhouse effect.

To explain this usually some sunlight is reflected back into space while some is absorbed by the earth keeping the planet warm. However the increase in greenhouse gases such as carbon dioxide prevent the light from reflecting back into space and this light becomes trapped causing the earth to heat more then it should. You can almost think of the trapped heat from the greenhouse gases as a blanket around the earth trapping the heat in.
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2 years ago
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