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kramer
3 years ago
10

The enzyme ________ unzips and unwinds the dna molecule.

Biology
2 answers:
irakobra [83]3 years ago
8 0
Helicase is the answer
trasher [3.6K]3 years ago
5 0
Helicase enzyme work to unzip the two strands
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Researchers have noticed that some men who were sterile because their sperm cells were unable to move also had chronic infection
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If a man has blood type AB ans his wife has blood type B. The possible blood types for their child is A, B and AB.

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3. In one population, 18 individuals have long hair and 182 individuals have short hair. It is known thatmating has been random
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Answer: p (short hair) = 0.91 and q (long hair) = 0.09

Explanation: In the population, short hair is a feature of domnant allele, because there are more short haired individuals than with long hair. In genetics, p is the frequency for dominant allele and q is for recessive allele.

For this question, short hair is allele L and long hair is allele l

So, the frequency of short hair is p and of long hair is q.

To calculate the frequencies:

Frequency of allele L = (number of copies of allele L in population) / (total number of L/l gene copies in population)

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The same formula goes for the recessive allele, so:

q = 18/200 = 0.09

Thus, the frequencies of hair allele are 0.91 and 0.09 for short and long, respectively.

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3 years ago
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