In a certain plant species, thick-shelled seeds are caused by the dominant allele T, while thin-shelled seeds are caused by the recessive allele t. Consider an individual plant that has thin-shelled seeds. What is the genotype of this individual?
A) TT
B) tt
C) Tt
D) tt or Tt

Question

Quizplus · Accepted Answer

If the individual plant has thin-shelled seeds, it must have two copies of the recessive allele (tt) as it is the only allele that can produce the thin-shelled phenotype.

In a Certain Plant Species, Thick-Shelled Seeds Are Caused by the Dominant