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GenaCL600 [577]
3 years ago
11

Rachel and Steve both have tightly curled hair. (The hair form gene shows incomplete dominance. There are two alleles, curly and

strait. The heterozygote has wavy hair). Rachel has a child with wavy hair. Is it possible for Steve to be the father of this child? Why or why not?
Biology
1 answer:
Mamont248 [21]3 years ago
7 0

Answer:

Hair form gene shows incomplete dominance. So if C is responsible for curly hair and c is responsible for straight hair,

CC = Curly

Cc = Wavy

cc = straight

Rachel has curly hair so her genotype is CC. She has a child with wavy hair. Wavy hair is produced by Cc. Since the child got C allele from Rachel, he must have got c allele from the father. So, the father should have at least one c allele. Steve has curly hair so his genotype is CC. Since Steve does not have even one c allele, he can not be the father of Rachel's child.

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Answer:

Option C, At a subduction zone, oceanic crust is forced deep into the Earth.

Explanation:

At sub-duction zone, the dense oceanic plates coincides with the less dense continental plates and thus sink below the continental plates. Sometimes these oceanic plates being dense, sink to greater depth with in the earth’s mantle. The sub-duction zone causes  earth quakes of high intensity when oceanic crust penetrates to greater depths of earth crust as they tend to change the rheology of the earths’ mantle and also causes bending of plates

Hence, option C is correct

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Explanation:

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