S
[[sXe.]]
Guest
I'm really confused on how to go about a dihybrid cross problem using punnet squares. Here's the problem:
In mice, the ability to run normally is a dominant trait. Mice with this trait are called running mice (represented by the allele R). The recessive trait cause mice to run in circles only. Mice with this trait are called waltzing mice (r). Hair color is also inherited in mice. Black hair (B) is dominant over brown hair (b).
It wants to know the cross of a heterozygous running, heterozygous black mouse and a homozygous running, homozygous black mouse.
Also would like to know the parental genotypic ratio and the phenotypic ratio.
Thanks if anyone helps, I'm completely stumped.
In mice, the ability to run normally is a dominant trait. Mice with this trait are called running mice (represented by the allele R). The recessive trait cause mice to run in circles only. Mice with this trait are called waltzing mice (r). Hair color is also inherited in mice. Black hair (B) is dominant over brown hair (b).
It wants to know the cross of a heterozygous running, heterozygous black mouse and a homozygous running, homozygous black mouse.
Also would like to know the parental genotypic ratio and the phenotypic ratio.
Thanks if anyone helps, I'm completely stumped.