In mice, the ability to run normally is a dominant trait. Micewith this trait are called “running mice†(R). The recessive traitcauses 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 dominantover brown hair (b).
A) Cross a heterozygous running mouse with a homozygous runningmouse.
i. What are the parentgenotypes? __________ x ____________
ii. Draw the punnett square
iii. What is the genotype ratio?
iv. What is the phenotype ratio?
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B) Cross a homozygous brown mouse with a homozygous brownmouse.
i. What are the parent genotypes? __________ x ____________
ii. Draw the punnett square
iii.What is the genotype ratio?
iv. What is the phenotype ratio?
C) Cross a homozygous waltzing mouse with a heterozygous runningmouse.
i. What are the parent genotypes? __________ x ____________
ii. Draw the punnett square
iii. What is the genotype ratio?
iv. What is the phenotype ratio?
D). Cross a homozygous waltzing, heterozygous blackmouse with ahomozygous waltzing, heterozygous black mouse.
i. What are the parent genotypes? __________________ x___________________
ii. Draw the punnett square (4x4 square)
iii. What is the phenotype ratio?
E). Cross a homozygous running, heterozygous blackmouse with awaltzing, brown mouse.
i.What are the parentgenotypes? __________________ x___________________
ii. Draw the punnett square (4x4 square)
iii. What is the phenotype ratio?
