Question

Beans may be tall or short depending on one locus, and they may have long or stubby pods, depending on another locus. A tall, stubby plant was crossed with a short, long plant. The F1 plants were all tall and stubby. Which of the following PHENOTYPES do you expect to occur least often in the F2?"

a. "tall, stubby"
b. "short, stubby"
c. "short, long"
d. "tall, long"

Answer 1

c. "short, long"

Step-by-step explanation:

The question being described involves two different genes; one coding for beans length and the other for pod length. According to the question, beans may be tall (T) or short (t) while they can also have have long (L) or stubby pods (l).

From the phenotypic ratio result of the F1 generation, which were all tall and stubby, it is clear that tall bean (T) and stubby pods (d) are highest balloon. According to Gregor Mendel's ratio of dihybrid cross; 9.3.3:1, the least occuring phenotype, which is 1 of 16, can be "short, long".