Multiple choice

Which among the following statements does NOT characterise sex linkage in mammals?

  1. Sex linkage is the genotypic expression of an allele related to the chromosomal sex of the individual.

  2. Genes on the X or Y chromosome are called sex-linked.

  3. X-linked recessive allele in humans causes hemophilia.

  4. X-linked traits are maternally inherited.

  5. The incidence of recessive X-linked phenotypes in females is the square of that in males.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Sex linkage is the phenotypic expression of an allele related to the chromosomal sex of the individual. This mode of inheritance is in contrast to the inheritance of traits on autosomal chromosomes, where both sexes have the same probability of inheritance.

Keep practicing — related questions