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3 years ago

What happens first at each origin of replication?

Biology

1 answer:

schepotkina [342]3 years ago

6 0

Answer:

The answer is C.

Explanation:

At first, an enzymes called Helicase unwind the double helix in a DNA .

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Once a compromised system is disconnected, it is safe from further damage.

butalik [34]

I think the right answer is that it's "false"

5 0

3 years ago

A gene with the sequence ATTCATTCA underwent duplication after a few generations. Which sequence represents this gene after the

Ratling [72]

Answer:

The sequence would be ATTCATTCA.

Explanation:

Usually, when a sequence is duplicated, one of them becomes a non-coding. It's just like a computer. There can only be one specific file, or else a duplicated one will just replace the existing one, if you allow the file to do so. Same with DNA. This is why most of our DNA have no function and why we lost genetic abilities such as being able to produce our own Vitamin C.

So instead of the new gene being ATTCATTCAATTCATTCA, it's simply ATTCATTCA. You simply cannot have duplicates, just like computer files. I wish I could share an amazing video by PBS Eons giving a great explanation about genes and stuff, but sadly Brainly doesn't like such stuff, so just search up in ㄚㄖㄩㄒㄩ乃乇 (ebuTouY) "genes we lost along the way" and it should be the first video that pops out. Trust me, it's a great video, it's much better than my explanation.

4 0

3 years ago

Can traits of organims be improved? Explain why.

maksim [4K]

Answer:

Adaptations are physical or behavioral traits that make an organism better suited to its environment. Heritable variation comes from random mutations. ... Rather, a genetic mutation causes a difference in fur color, which may help that rabbit hide better in its environment.

Explanation:

4 0

3 years ago

select the cell cycle impairments that you predict would lead to cancer. recall that cancer arises from unregulated, repeated ce

Vera_Pavlovna [14]

Cancer cells can arise in a variety of ways, the most common, however, tends to be genetic mutations.

Genetic mutations can occur during the life of a cell due to outside factors such as:

The food we eat
The environment we expose the cell to
The substances that touch the cell (e.g skin cells)

That being said, the most common time for a genetic mutation to take place is during cellular division. During this time the DNA that encodes the cells is duplicated. Genetic mutations in this DNA sometimes cause the elimination of programmed cell death.

Programmed cell death is what tells a cell when it should stop growing and dividing. This is a regulatory function designed to keep the number of cells at a balance, growing only when needed. As this cell multiplies, this produces an increasing number of cells that will not die. The accumulation of these cells is referred to as cancer.

To learn more visit:

brainly.com/question/436553?referrer=searchResults

4 0

2 years ago

Does adenine and thymine have a double bond.

kodGreya [7K]

Answer:

yep

Explanation:

they have a double hydrogen bond

5 0

2 years ago