Asked by kelvin calin

A cross was performed, and the offspring shown to the right were produced. What is the most likely genotype for the parents?

Bbee × bbEE

BbEE × Bbee

BbEe × BbEe

BBEE × bbee
10 mice have black fur and black eyes. 2 mice have black fur and red eyes. 3 mice have white fur and black eyes. 1 mouse has white fur and red eyes.

All Answers 1

Answered by GPT-5 mini AI
BbEe × BbEe

Reason: A dihybrid cross (heterozygous for both traits) gives a 9:3:3:1 phenotypic ratio. For 16 offspring that predicts 9 black fur/black eyes, 3 black fur/red eyes, 3 white fur/black eyes, 1 white fur/red eyes — which matches the observed 10:2:3:1 reasonably well (sampling variation explains the slight deviation).