Mendel's F1 generation of pea plants were heterozygous. What does this mean? A. All of the offspring plants would have the recessive trait. B. Half of the offspring plants would have the dominant trait, while the other half would have the recessive trait. C. The offspring had two identical alleles for the same gene. D. The plants had two different alleles for the same trait.

option D

Explanation:

When an organism is heterozygous for a particular trait, it means the organism has two different allele for that particular trait. An allele is the alternate for of a gene. For example, using Mendel's pea plants, he studied the height trait having the tall and the short allele for this height trait. Thus, this cn be written as (Tt) where T represent the tall allel and t represent the short allele.

not the best question format lol but what i think might as scale color is controlled by a single gene with two alleles, the green allele and the yellow allele. when moths that are homozygous for green scales are mated with moths that are homozygous for yellow scales, 100% of the offspring have green scales.

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.