Question

What did Mendel's cross-pollination of pea plants prove?

a) "The existence of dominant and recessive traits"
b) "The effect of environment on genetic expression"
c) "The randomness of inheritance"
d) "The role of DNA in genetics"

Answer 1

Mendel's cross-pollination of pea plants proved the existence of dominant and recessive traits.

Step-by-step explanation:

Mendel's cross-pollination of pea plants proved the existence of dominant and recessive traits. When he crossed parents that differed by one trait, the F1 offspring all expressed the traits of one parent, showing the dominance of that trait. When the F1 offspring were self-crossed, the F2 offspring exhibited a 3:1 ratio of dominant to recessive traits, confirming the presence of both traits and the random segregation of alleles.