What is the difference between phenotype and genotype? A. Phenotype is the physical expression of a trait and genotype is all that alleles in the organism. B. Genotype is the physical expression of a trait and phenotype is all the alleles in the organism. C. Phenotype are the alleles that are mast in genotypes are the alleles that are expressed. D. Phenotype is when both allies are the same and genotype is when the alleles are different.

A. Phenotype is the physical expression of a trait and genotype is all that alleles in the organism.

Explanation:

An organism's genotype is the combination of alleles found at a particular gene. The phenotype is how theses alleles are expressed to form a trait.

In a diploid organism there are two alleles for every gene. In simple Mendelian traits. one allele is dominant over the other, which is recessive. That means, that the phenotype displayed will be associated with the dominant allele whenever it is present.

answer: b

coz red blood cells marrow and circulates the body for 120 days.