You have a dog that drools (d). It turns out that this is a Mendelian trait and recessive in the population of dogs. You breed this drooling dog with another dog that does not drool and is heterozygous for the non-drooling trait. The possible allele combinations for the cross between the drooling dog and non-drooling dog are: Group of answer choices

You have a dog that drools (d). It turns out that this is a Mendelian trait and recessive in the population of dogs. You breed this drooling dog with another dog that does not drool and is heterozygous for the non-drooling trait. The possible allele combinations for the cross between the drooling dog and non-drooling dog are: Group of answer choices.

The possible allele combinations for the cross between the drooling dog and non-drooling dog are:

Only dd
Dd and dd, but not DD
Only Dd
DD, Dd, and dd

Answer:

Dd and dd, but not DD
Drooling dog gametes → d, d
Non-drooling dog gametes → D, d
F1) 1/2 dd + 1/2 Dd (No DD)

Explanation:

Available data:

Autosomal diallelic gene
The D allele is dominant and expresses the non-drooling trait
The d allele is recessive and expresses the drooling trait
Cross: A dog that drools with a heterozygous dog that does not drool.

Parentals) dd x Dd

Gametes) d d D d

Punnett square) D d

d Dd dd

F1) 1/2 = 50% of the progeny is expected to be non-drooling dogs, Dd

1/2 = 50% of the progeny is expected to be drooling dogs, dd.