Question

Gregor Mendel performed crosses using true-breeding pea plants and observed the traits exhibited by the offspring. He crossed a yellow-seed male plant with a green-seed female plant. He then allowed the offspring (F generation) to self-fertilize, producing offspring (F generation). Based on his results, Mendel concluded that traits can be masked. What evidence best supports Mendel's conclusion?

A. the green color trait was present only in the parent generation
B. the green color trait appeared less pretentious in each successive generation.
C. the green color trait was present in about one quarter of the population of every generation.
D. the green color trait was missing from the F1 generation, but reappeared in the F2 generation.

Answer 1

D. the green color trait was missing from the F1 generation, but reappeared in the F2 generation

Step-by-step explanation:

This supports Mendel's conclusion that traits can be masked. This observation demonstrated the principles of dominant and recessive traits, with the green trait being recessive and masked in the F1 generation by the dominant yellow trait. The reappearance of the green trait in the F2 generation showed that it was not lost but rather masked in the F1 generation.