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A certain flower is a pink color that breeders have determined is a single gene recessive trait. What must be true about the gene to determine flower color?


A. It has 2 dominant alleles.

B. It has at least 1 dominant allele.

C. It has only 1 recessive allele.

D. It has 2 recessive alleles.

Respuesta :

ComDest
If a trait is recessive, the only way for it to show as the phenotype is if the genotype has 2 recessive alleles (homozygous recessive).

If a trait is dominant, the allele would take over in the presence of a recessive one (heterozygous).

So, if pink is recessive the plant must have 2 of the same recessive alleles to make a pink flower.

Hope that helps!