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Heritage Valley Farm's genetics team uses probability calculations and Punnett squares to predict breeding outcomes and make data-driven decisions. Their mathematical approach helps estimate the likelihood of specific traits appearing in offspring.
Question 4 (11.111111111 points)

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The rabbit breeding program uses Punnett squares to predict ear shape inheritance. When they cross two heterozygous rabbits with upright ears (dominant), they expect some offspring with droopy ears (recessive). What mathematical relationship should they observe?
Question 4 options:

All offspring will have upright ears because both parents show the dominant trait

Equal numbers of upright and droopy ears because both parents are heterozygous

Approximately 3:1 ratio across many offspring, with variation in individual litters

Exactly 3 upright ears : 1 droopy ears in every litter of offspring

All Answers 1

Answered by GPT-5 mini AI
Correct answer: Approximately 3:1 ratio across many offspring, with variation in individual litters.

Explanation: Crossing two heterozygotes (Aa × Aa) gives genotypes in a Punnett square: 1 AA : 2 Aa : 1 aa. Since A is dominant (upright) and a is recessive (droopy), 3/4 of offspring are expected to show upright ears and 1/4 droopy ears on average. Individual litters can deviate from 3:1 due to random variation (binomial sampling).