11. In humans, one gene with two alleles controls the production of hair in the mid-digital region of the fingers. Symbols used for the alleles are shown below.G — mid-digital hair presentg — mid-digital hair absentA person who has no hair in the mid-digital region would have a genotype of1 pointGGGgggGG or Gg
Question
- In humans, one gene with two alleles controls the production of hair in the mid-digital region of the fingers. Symbols used for the alleles are shown below.G — mid-digital hair presentg — mid-digital hair absentA person who has no hair in the mid-digital region would have a genotype of1 pointGGGgggGG or Gg
Solution
A person who has no hair in the mid-digital region would have a genotype of gg. This is because the presence of hair in the mid-digital region is represented by the dominant allele (G), and the absence of hair is represented by the recessive allele (g). In order for the trait of no hair to be expressed, the individual must have two copies of the recessive allele, hence the genotype gg.
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