An organism is said to be ( ) if it carries two identical alleles for a certain trait. A: heterozygous B: homologous C: homozygous D: monohybrid E: dihybrid

If an organism is said to be true breeding for a particular trait, this means that A: they are heterozygous for that trait. B: they are homozygous for that trait. C: they are incompletely dominant for that trait. D: they have two kinds of alleles for that trait.

Linked genes always exhibit A: phenotypes that are similar B: recombination frequencies of less than 50% C: homozygosity when involved in a testcross D: a greater number of recombinant offspring than parental offspring when involved in a testcross E: a lack of recombinant offspring when a heterozygous parent is involved in a testcross