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MArishka [77]
3 years ago
11

Left thumb over right is dominant, and is represented with a capital C. Right thumb over left is recessive, and is represented w

ith a lowercase c.
What would be the genotype of a person who naturally crosses his right thumb over his left when folding his hands together?

A) cc

B) Cc

C) CC or cc

D) CC or Cc
Biology
1 answer:
dimulka [17.4K]3 years ago
5 0

<u>Answer</u>: Option A) cc

<u>Explanation</u>:

  • For a given gene, there are 2 or more alternative forms present, and they are known as alleles.
  • The alleles are of two types - <em>dominant and recessive.</em>
  • The <em>dominant</em> allele is the one which expresses itself in both heterozygous and homozygous condition in the phenotype.
  • The <em>recessive</em> allele is the one which is only able to express itself in homozygous condition.
  • Since, the right thumb over left allele c is recessive, the person who crosses <em>right thumb over left must be a homozygote, and hence his genotype should be cc.</em>
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