What phenotypic ratio would you expect as a result of a test cross between a dihybrid organism and one that is homozygous recessive for alleles at two independent loci? a. 3: 1b. 9: 3: 3: 1c. 1: 1: 1: 1d. 1: 2: 1e. 9: 4: 2: 1

c. 1:1:1:1

Explanation:

Dihybrid organism is an organism that is heterozygous at two different genetic loci. So, for example if there are two loci A and B, dihybrid organism would have AaBb genotype. Homozygous recessive for alleles at two loci has the genotype aabb.

P: AaBb  x  aabb

The possible genotypes are: AaBb  Aabb  aaBb  aabb

children tend to take more after their grandparents more than their parents. it’s the dna you received that was passed down to you somewhere in your family. maybe one of your grandparents had/has straight hair and you might have gotten it from them.