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 For each phenotype, write the possible genotypes.

In dogs, deafness is recessive.

Deafness: ____________________

Normal hearing: ______,____

Answer :

We are gonna call the recessive gene of deafness d and normal hearing D.

Deafness: dd

Normal Hearing: DD, Dd

In order for deafness to occur there must be two genes because so long as there is the dominate gene of D present it will always be normal hearing.

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