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if a litter resulting from the mating of two short tailed cats contains three kittens without tails, two with long tails and six with short tails, what would be the simplest way of explaining the inheritance of tail length in these cats. assume there is one gene for tail length, with two alleles: T and t
autosomal or x-linked

2007-01-18 14:47:50 · 2 answers · asked by smile 1 in Science & Mathematics Biology

2 answers

Incomplete dominance is correct. T (for long tail) and t (for no tail). A heterozygote (Tt) is the intermediate phenotype, short tail. Therefore, both the parents are Tt. Writing a simple punnett's square will show you that 1/4 of offspring will be TT (long tail), 1/4 will be tt (no tail), and 1/2 would be Tt (short tail). That is pretty close to 2:3:6! (And it is demonstrating autosomal inheritance as well).

2007-01-18 15:44:01 · answer #1 · answered by r alexander 4 · 0 0

incomplete dominance maybe on autosomal

2007-01-18 23:39:00 · answer #2 · answered by wesnaw1 5 · 0 0

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