You observe an individual of your favorite study organism expressing the dominant phenotype for a certain trait. how would you go about determining if the individual was homozygous dominant or heterozygous for that trait?

d. in sexual reproduction, offspring have more chromosomes than

either parent.

asexual reproduction results in offspring which are genetically the same as the parent organism (not counting a rare mutation). sexual reproduction produces a random mixture of the genetics derived from both parents

explanation:

"do a testcross with a homozygous recessive plant."