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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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Do research about new hypothesis that has replaced an older explanation of something in the natural world
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I believe that what is meant with the phrase "older explanation" is none other that superstition. Therefore, I will give you one superstitious belief which is now explained by science.

In Southeast Asia, people used to believe that St. Elmo's fire appears in remote areas because a bloody battle occured in that place leaving disembodied souls of the dead wandering there in the night and even in sunshine!

For generations, many people believed that this is a fact and some even say that these apparitions are diabolical or demonic in nature. So often, caution is advised to people whenever a ball of fire appears out in the open. 

However, recent breakthroughs in the 21st century helped scientists to explain this mysterious phenomena. They found out that St. Elmo's fire is actually plasma, nothing special. Now, plasma is considered one of the states of matter! But mind you, it still does not explain why St. Elmo's fire seems to have a mind of its own!
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3 years ago
Which of the following is the template for the production of RNA within a cell?
irga5000 [103]

Answer:

I most liekly know what produces RNA in a cell.

Explanation:

Molecules of rRNA are synthesized in a specialized region of the cell nucleus called the nucleolus, which appears as a dense area within the nucleus and contains the genes that encode rRNA.

4 0
3 years ago
How many genotypes are possible for the offspring? Explain.
Trava [24]
Usually when you are trying to figure out different possibilities of offspring using punnet squares, 4 genotypes can be figured out. I think that it also depends on how you are finding out the different genotypes for offspring.
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click on the attachment

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Cell theory has 3 basic parts:
zimovet [89]

Answer:

its all organisms are

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