Question

a condition is autosomal recessive. the pedigree shows the inheritance of this condition in a family. which of the following is the likely genotype of individual 1? ee ee x^ey x^ex^e

Explanation:

Step1: Recall autosomal - recessive inheritance rules

For an autosomal - recessive condition, affected individuals have a genotype of ee (homozygous recessive), and unaffected individuals can be either EE (homozygous dominant) or Ee (heterozygous). Since individual 1 is unaffected but has affected offspring, it must be a carrier.

Step2: Analyze the options

• Option 'ee' is for affected individuals.
• Option 'Ee' is a carrier genotype for an autosomal - recessive condition, which is consistent with the fact that individual 1 is unaffected but has affected offspring.
• Options 'XᵉY' and 'XᴱXᴱ' are related to X - linked inheritance, not autosomal inheritance as stated in the problem.

Answer:

Ee