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Papessa [141]
2 years ago
11

Before DNA replication can occur the double stranded DNA must first

Biology
1 answer:
Taya2010 [7]2 years ago
4 0

Answer/Explanation:

First, initiator protein unwinds a short stretch of the DNA double helix. <u>The length of the DNA double helix about to be copied must be unwound. </u> In addition, the two strands must be separated, much like the two sides of a zipper, by breaking the weak hydrogen bonds that link the paired bases.   Once the DNA strands have been unwound, they must be held apart to expose the bases so that new nucleotide partners can hydrogen-bond to them. Then, a protein known as helicase attaches to and breaks apart the hydrogen bonds between the bases on the DNA strands, thereby pulling apart the two strands.

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Answer:

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Where did Darwin say all living things came from?
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Why are marsupials only found in Australia?
Vsevolod [243]

Answer:

B. Australia is isolated

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3. In centaurs, the allele for curly tails (T) is incompletely dominant to the allele for straight tails (t). The hybrid genotyp
Reptile [31]

Answer:

a. Determine the allele frequencies of:

f(T) = 0.485 ≅ 0.48

f(t) = 0.515 ≅ 0.52

b. Determine the genotype frequencies of the exposed generation

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the genotype frequencies of the next generation

  • F(TT) = 0.23
  • F(Tt) = 0.5
  • F(tt) = 0.27

Explanation:

Due to technical problems, you will find the complete answer and explanation in the attached files

Download pdf
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3 years ago
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Answer:

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