Question

Labrador retrievers coat color is controlled by two genes. For the cross bbEe x BbEe, list the gametes produced by each parent.

What color puppies will this cross produce.

List the % for each color from this cross.

Answer 1

bbEe produces: bE; and be

BbEe produces: BE; Be; bE; and be

B_E_ produces black coat color;

bbE_ produces chocolate coat color;

__ee produces yellow coat color;

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BbEE: Black color – 12.5%

BbEe: Black color – 25%

So, black color is 37.5%

bbEE: chocolate color – 12.5%

bbEe: chocolate color – 25%

So, chocolate color is 37.5%

BBee: yellow color – 0%

Bbee: yellow color – 12.5%

bbee: yellow color – 12.5%

so, yellow color is 25%