9) Chinc Il South American rodents that are sometimes kept as pets. Their coat l

Question

9) Chinc Il South American rodents that are sometimes kept as pets. Their coat led by a gene at the C locus:the C allele encodes for black fur and is e c allele, which encodes for gray fur. Ear size is controlled by a gene at the he E allele encodes for big ears and is dominant to the e allele, which encodes for do Elocus enormous ears. If you bred a double homozygous recessive chinchilla with a double heterozygote, what is the probability that their offspring would be black with énormous ears? A) 1/16 B) 1/4 C))3/16 Cofe ccee lote tcee 9/16 E) 3/4

Explanation / Answer

ans. B 1/4

ccee x CcEe

grey coat, enormous ear x black coat big ears

cc x Cc

50% or 1/2 probability of black coat Cc

50% or 1/2 probability of grey coat cc

ee  x Ee

50% or 1/2 probability of enormous ears (ee)

50% or 1/2 probability of big ears ( Ee)

Thus according to the question probability of having the black coat with enormous ears would be-

1/2 x1/2 =1/4

c c C Cc Cc c cc cc

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