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nirvana33 [79]
3 years ago
5

Why can only one sperm enter an egg

Biology
1 answer:
Iteru [2.4K]3 years ago
3 0
Because at that point, the egg would already be fertilized. Now in cases like identical twins, two sperm must enter the egg at the exact same time.
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3 years ago
The enzyme telomerase solves the problem of replication at the ends of linear chromosomes by which method?
adell [148]
<h2>Answer </h2>

The method is by adding various small DNA chains such as TTAGGG, that develop a hairpin turn.

<u>Explanation </u>

The method is by adding various small DNA chains such as TTAGGG, that develop a hairpin turn. Telomerase is an RNA dependent DNA polymerase means an enzyme that can make DNA using RNA as a template. The ends of linear chromosomes called telomeres that protect genes from getting deleted as cells continue to divide. The telomerase enzyme attaches to the end of chromosome complementary bases to RNA template are added on 3 ends of the DNA strand.

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3 years ago
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3 years ago
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hope this helps
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