Question

1. we discussed four different modes of inheritance: complete dominance, incomplete dominance, codominance, and sex linked. Compare and contrast each of these (discuss how they are different, and how they are similar) using examples from class to illustrate your points (4pts).

Answer 1

ANSWER:

Complete dominance: It is when one allele(dominant allele) completely masks the other allele (recesive allele).Example: TT(Tall plant) X tt( dwarf) = Tt ( tall plant)

Incomplete dominance: It is when one allele is not able to completely mask the other allele due to which the result is somewhere in between due to blending of both the alleles. Example: Red rose X White rose = Pink rose

Codominance: It is when both the alleles are dominant and both are expressed at the same time. Example: Blood group AB where both Allele A and B are dominant and are expressed.

Sex linked: It is when the inheritance is related to the sex chromosomes i.e. X or Y. Example : Hemophilia is an X linked recessive disorder.