Some plants fail to produce chlorophyll,due to a recessive trait.If we locate a pea plant that is heterozygous for this trait,self-pollinate it,and harvest the seeds,what are the likely phenotypes of the resulting offspring?
A)All will be green with chlorophyll since that is the dominant trait.
B)All will be white and lack chlorophyll since this is self-pollinated.
C)About one-half will be green and one-half white since that is the distribution of the genes in the parents.
D)About one-fourth will be white and three-fourths green since it is similar to a monohybrid cross.
E)About one-fourth will be green and three-fourths white since it is similar to a monohybrid cross.

Question

Quizplus · Accepted Answer

This scenario is similar to a monohybrid cross, where the heterozygous parent (Gg) has a 50% chance of producing gametes with the dominant allele (G) and a 50% chance of producing gametes with the recessive allele (g). When these gametes combine during fertilization, the resulting offspring can be GG (green and chlorophyll producing), Gg (green and chlorophyll producing but carrying the recessive allele), or gg (white and lacking chlorophyll). Therefore, in this scenario, one-fourth of the offspring are likely to be gg and lack chlorophyll, while three-fourths are likely to be either GG or Gg and have chlorophyll.

Some Plants Fail to Produce Chlorophyll,due to a Recessive Trait