When Gregor Mendel crossed a tall plant with a short plant, the F1 plants inherited
a. an allele for tallness from each parent.
b. an allele for tallness from the tall parent and an allele for shortness from the short parent.
c. an allele for shortness from each parent.
d. an allele from only the tall parent.
a. an allele for tallness from each parent.
b. an allele for tallness from the tall parent and an allele for shortness from the short parent.
c. an allele for shortness from each parent.
d. an allele from only the tall parent.