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Two cats having short tails are mated and have 11 kittens. The offspring (kittens) from this cross yield interesting results. Of the 11 kittens, 3 are born with long tails, 2 are born with no tails and 6 are born with short tails. What is the simplest genetic explanation for this litter of kittens and their parents? Provide the genotypes of the parents and all kittens in your answer.



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danaahbabi

Answer:

The simplest genetic explanation involves a single gene with three alleles: SS (short tail, dominant), ss (long tail, recessive), and tt (no tail, recessive lethal). The parents are likely heterozygous SstSst.Possible offspring genotypes and phenotypes:SS (short tail)Ss (short tail)St (short tail)ss (long tail)st (no tail)tt (lethal, not viable)Given the 11 kittens:3 long tails: ssss6 short tails: SS,Ss,StSS,Ss,St2 no tails: ststThus, the parents' genotypes are SstSst, and the offspring have the expected distribution based on these genotypes.

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