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kondor19780726 [428]
3 years ago
14

You are studying a plieotrophic gene in dogs. One trait governed by this gene is tail length. For this trait the T allele is ass

ociated with normal length tails and the t allele is associated with short tails. The other trait governed by T/t is viability. In this case, T is associated with normal growth and development; whereas t is associated with embryonic loss of viability. In both cases T is completely dominant to t. You cross two dogs that are Tt heterozygotes. What ratio of offspring do you expect to see as a result of this cross?
a. 3 dogs with short tails : 1 dog with normal tail
b. 2 dogs with normal tails : 1 dog with short tail
c. 3 dogs with normal tails : 1 dog with short tail
d. 2 dogs with short tails : 1 dog with normal tail
e. None of the above
Biology
1 answer:
dolphi86 [110]3 years ago
3 0

Answer: C

Explanation: 1 dog will be homozygote TT (is homozygote for normal tail length), 2 dogs will be heterozygous Tt (is the gene for embryonic loss of viability with short taill will be recessive or masked by the dominant T. While 1 dog will be homoxygote gene for TT(homozygote gene for embryonic loss of viability with short still.

3 dogs will altogether have normal tail while one will have short tail.

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