When gregor mendel crossed a tall plant with a short plant, the f1 plants inherited.
a. one allele from each parent
b. two alleles from each parent
c. three alleles from each parent
d. four alleles from each parent

a. one allele from each parent

An allele in biological sciences is one of the possible forms of a gene that it can inherit. Most genes have two alleles, a dominant allele and a recessive allele. When Gregor Mendel crossed a tall plant with a short plant, the F1 plants inherited an allele for tallness from the tall parent and an allele for shortness from the short parent.

a. one allele from each parent

Explanation:

According to the law of inheritance given by Mendel when two parents are crossed then each of them contributes one allele each for a given gene to make up the offspring.

Therefore, when a tall plant was crossed with a short plant then the cross was as follows:

TT X tt > Tt

Here the offspring had one allele T and other allele t , thus it got one allele from each of its parent.