Question

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punnett square practice
a. in laboratory mice, gray coat color (g) is dominant over albino coat
color (g). cross a female gg with a male gg and answer the questions
that follow:

1. how many possible genotypes are

there among the offspring?

1. how many possible phenotypes are

there among the offspring?

1. what percentage of the offspring are

gray?

1. what percentage of the offspring are

albino?

1. what color is the female parent?
2. what color is the male parent?
3. what is the phenotypic ratio of gray

coat color to albino coat color?

Explanation:

Step1: Analizar genotipos

Genotipos posibles: Gg y gg.

Step2: Analizar fenotipos

Fenotipos: gris (Gg) y albino (gg).

Step3: Calcular porcentaje gris

Hay 2 Gg de 4. $\frac{2}{4}=0.5 = 50\%$.

Step4: Calcular porcentaje albino

Hay 2 gg de 4. $\frac{2}{4}=0.5 = 50\%$.

Step5: Determinar color madre

Madre es Gg. G (gris) es dominante.

Step6: Determinar color padre

Padre es gg. g (albino) es recesivo.

Step7: Calcular ratio fenotípico

2 gris : 2 albino = 1:1.

Answer:

1. 2
2. 2
3. 50%
4. 50%
5. Gray
6. Albino
7. 1:1