Question

a plant for instance that carries both a dominant and a recessive allele for a certain trait is said to be

Answer 1

Heterozygous, because for example, if B is dominant and b is recessive, and a plant carries both alleles, it would be Bb which is heterozygous. Heterozygous means that the alleles are different and homozygous is if the alleles are the same. Hope this helps!

Answer 2

Heterozygous dominant.