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In mice, G for grey coat colour is dominant. gg individuals are black. Two grey mice are mated to produce nine grey mice and two black mice. Explain results.

3 years ago

Answered By Emily D

Total: 11 mice

% black: 2/11 = 18%

% grey: 9/11 = 82%

 

This is closest to what would happen when you breed two heterozygous grey mice (draw out the punnet squares for each if you need extra proof)

GGxGg = 100% grey, 0% black

GgxGg = 75% grey, 25% black

ggxGg = 50% grey, 50% black

ggxgg = 0% grey, 100% black