What genotype results in the same phenotype?

Answer 1

A phenotype is the actual result that you can actually see, whereas the genotype is the allele or gene that causes the phenotype. Lets say that brown hair is dominant and which is caused by an allele that we'll represent with B, and lets say that red hair is cause by a recessive allele that we'll represent with b. A genotype is represented by a combination of 2 of these alleles. So we have BB, Bb and bb as our possible genotypes of the child. One of the alleles is from the mom and the other from the dad. BB means that both of the parents have brown hair, which means the offspring will have brown hair, and since both parents have brown hair and brown is dominant, we call the offspring homozygous dominant for that genotype. Homozygous means the same. Bb means that on parent has brown hair and the other has red hair or at least carries the red hair trait. This offspring will have brown hair because B is dominant over b. We call this heterozygous dominant. Heterozygous means different. Last we have the bb. this means that either both parents have red hair or both have the traits for red hair. This offspring will have red hair because they do not have any dominant genes. This is called homozygous recessive. Now this is just an example. hair color is gets much more complicated then this but that's the basic idea for all genotypes and phenotypes. I hope this helps at least some.

Answer 2

The genotype is the genes inherited. Phenotype is the expression of that genotype. Phenotype is determined by recessive, dominance, co-dominance.