In mice, the ability to run normally is a dominant trait. Mice with this trait are called running mice (R). The recessive trait causes 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). For each of the following problems, fill in the Punnett square and fill in the information on the indicated lines.
Monohybrid Cross:
1. Cross a heterozygous running mouse with a homozygous running.
Both Parental Genotypes?
Phenotypic ratio?
do a punnet square
2. Cross a heterozygous black mouse with a homozygous brown mouse.
Both Parental Genotypes?
Phenotypic ratio?
do a punnet square
Dihybrid Cross:
3. Cross a heterozygous running, homozygous black mouse with a heterozygous running, brown mouse.
Both parental genotypes?
phynotypic ratio?
do a punnet square
4. Cross a heterozygous running, heterozygous black mouse with a waltzing, brown mouse.
Both Parental Genotypes?
Phenotypic ratio?
do a punnet square
5. Cross a heterozygous running, heterozygous black mouse with a heterozygous running, heterozygous black mouse.
Both Parental Genotypes?
Phenotypic ratio?
do a punnet square
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