QUESTION IMAGE
Question
cross: aa × aa
what are the phenotype percentages of the offspring?
(a - brown fur color; a - white fur color)
0% brown fur and 100% white fur
75% brown fur and 25% white fur
50% brown fur and 50% white fur
25% brown fur and 75% white fur
Step1: Identify dominant/recessive traits
A (brown) is dominant, a (white) is recessive. Genotypes with at least one A show brown fur; only aa shows white fur.
Step2: Count genotype frequencies
From Punnett square: AA, Aa, Aa, aa. Total genotypes = 4.
Brown fur genotypes: AA, Aa, Aa → 3 genotypes.
White fur genotype: aa → 1 genotype.
Step3: Calculate phenotype percentages
Brown fur percentage: $\frac{3}{4} \times 100\% = 75\%$
White fur percentage: $\frac{1}{4} \times 100\% = 25\%$
Snap & solve any problem in the app
Get step-by-step solutions on Sovi AI
Photo-based solutions with guided steps
Explore more problems and detailed explanations
75 % Brown fur and 25% White fur