Question

In peas, yellow seed color (Y) is dominant to green seed color (y). Which describes an organism that has nonidentical alleles for seed color? yy and has green seeds Yy and has yellow seeds YY and has yellow seeds Yy and has green seeds

Answer 1

The correct answer is Yy and has yellow seeds.  

An allele refers to a variant kind of a gene. Few of the genes possess numerous different kinds, which are positioned at an identical alignment on a chromosome. The alleles are the different forms of two identical genes. For a given gene, there can be only one type of allele or two or more types of alleles can be present.  

The similar or identical alleles show that the alleles are homozygous, while the non-identical alleles show that the alleles are not the same, that is, heterozygous.  

Answer 2

Yy and has yellow seeds.

An allele is one of the possible forms of a gene. Most genes have two alleles, a dominant allele and a recessive allele. If an organism is heterozygous for that trait, or possesses one of each allele, then the dominant trait is expressed. ... Alleles were first defined by Gregor Mendel in the law of segregation.