Which one of the following pairs is wrongly matched with the associated phenomenon ?

Options

A. XX-XO type sex-determination - Grasshopper
B. ABO blood grouping - Codominance
C. Starch synthesis in pea - Multiple alleles
D. TH Morgan - Linkage

Answer

C

Explanation

In the given pairs , option (c) is wrongly matched. Starch synthesis in pea is an example of pleiotropy . A pleiotropic gene is a single gene which produces many or multiple unrelated phenotypes . Rest of the pairs are correctly matched .
Concept Enhancer The gene for starch synthesis in pea seeds has two alleles B and b . In BB genotype , large starch grains are produced . After maturation the seeds are round . In bb homozygous condition , smaller starch grains are produced and mature seeds are wrinkled . Bb heterozygotes form round seeds so that B seems to be dominant allele.
However , Bb seeds have starch grains of intermediate size , showing incomplete dominance.