The Genetics of Fur and Eye Color in Mice
1. How can we create a Punnett square based on the given information? 2. How many offspring in the Punnett square have black fur and black eyes, and what are the possible genotypes for these mice? 3. How many mice have black fur and red eyes? How many have white fur and black eyes? 4. How many mice have white fur and red eyes? 5. For the genotypes FfEe and ffee, what percentage of the children will have white fur and red eyes? 6. For the genotypes FfEE and Ffee, what percentage of the children will have white fur and black eyes?
1. Punnett Square
F
f
E
FE
fE
e
Fe
fe
2. Offspring with Black Fur and Black Eyes
In the Punnett square, the genotype for black fur and black eyes is "FE" (one F allele and one E allele). There are 9 out of 16 possible offspring with this genotype. The possible genotypes for mice with black fur and black eyes are: FE, fE.
3. Mice with Black Fur and Red Eyes
The genotype for black fur and red eyes in the Punnett square is "fEe" (two f alleles and one E allele). There are 3 out of 16 possible offspring with this genotype.
4. Mice with White Fur and Black Eyes
In the Punnett square, the genotype for white fur and black eyes is "FfE" (one F allele and one E allele). There are 3 out of 16 possible offspring with this genotype.
5. Mice with White Fur and Red Eyes
The genotype for white fur and red eyes in the Punnett square is "ffee" (two f alleles and two e alleles). There is 1 out of 16 possible offspring with this genotype.
6. Percentage Calculation
- For the genotypes FfEe and ffee, the percentage of children with white fur and red eyes is approximately 6.25%.
- For the genotypes FfEE and Ffee, the percentage of children with white fur and black eyes is approximately 18.75%.
Note: Percentages are estimates based on the Punnett square and assumptions about allele inheritance.