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baherus [9]
3 years ago
6

Why does a cell need to copy its DNA before it divides?

Biology
1 answer:
alexgriva [62]3 years ago
6 0

Answer:

A

Explanation:

It can't be B because during mitosis, sister chromatids inevitably are separated. It can't be C because they are copied so they have the same instructions and know what to do. A is the best choice.

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The type of inheritance that involves the partial expression of two different<br> alleles is called
belka [17]

Answer: Incomplete dominance

Explanation:

In incomplete dominance, both alleles are expressed but have become blended giving rise to a new trait with one also been more noticed than the other although both are expressed. For instance a red flower and a white flower are crossed, giving rise to a pink flower. As compared to codominance, both alleles are equally expressed and are equally dominant. For example, a white college crossed with a black hen giving rise to a black and white (checkered) chick.

4 0
3 years ago
What would happen if cytokinesis did not occur?
12345 [234]

Answer:

Cytokinesis takes place in both meiosis and mitosis and performs the separation of he cell in half and form one nucleus into each daughter cell.

If cytokinesis did not happen, it will from multinucleated cells which means that their will be multiple nuclei in single cell and cell will not get separate in half, and no new daughter cells will form.

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3 years ago
Most electricity in the United States is generated using coal, natural gas, nuclear energy, or hydropower. Which of these add ca
enot [183]

Answer:

Coal

Explanation:

it's expells the most CO2 into the atmosphere

7 0
3 years ago
Read 2 more answers
Which of the following is a NOT mechanism by which the biofuels are made? a. by reacting animal fat or vegetable oil with waterb
tester [92]

Answer:

A. by reacting animal fat or vegetable oil with water.

D. by treating animal fat or vegetable oil with hydrogen

Explanation:

Water is insoluble in animal fat or vegetable oil so it makes a layer on the surface of oil. When animal fat or vegetable oil react with hydrogen, it produces solid oil called ghee not biofuels. Biofuel is produced when animal fat or vegetable oil react with alcohol.

5 0
3 years ago
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You are a sales representative for a company that makes a new alternate fuel for vehicles. You have prepared a presentation for
Brums [2.3K]

Answer:

C. How much greenhouse gas does your fuel produce compared with current fuel sources?

Explanation:

Answer A asks whether vehicles need to be changed to use the fuel.

Answer B asks whether the vehicles will get better mileage.

Answer C asks whether emissions will be better or worse than current emissions.

Answer D asks whether it will be more expensive than current fuel.

Hope this helps!

8 0
3 years ago
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