Question

What two alleles combine to make a heterozygous genotypes?

A.)two recessive alleles
B.)one dominant and one recessive allele
C.)two dominant alleles

Answer 1

B. one dominant and one recessive allele

Answer 2

B.) One dominant and one recessive allele

Heterozygous genotypes occurs when the two alleles at a particular gene locus are different. A heterozygous genotype may include one normal allele and one mutation, or two different mutations. The latter is called a compound heterozygote.

The two alleles representing the trait are different (e.g. Pp for purple color). Although the pea plant appears purple in color (its phenotype is purple), its genotype (genetic make-up) is a mixture of a dominant “P” and a recessive ‘p” trait.

Step-by-step explanation:

Heterozygous refers to having inherited different forms of a particular gene from each parent. A heterozygous genotype stands in contrast to a homozygous genotype, where an individual inherits identical forms of a particular gene from each parent.