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4.Principles of Inheritance and Variation
medium
$BB =$ for black colour alleles
$bb =$ for brown colour alleles
Offspring of a cross between a black mouse and brown mouse allowed to interbreed than find out the percentage of black coat in them
A
$75\, \%$
B
$50\, \%$
C
Cross is not possible because black and brown mouse are different species
D
$100\, \%$
Solution
Black colour is dominant over the recessive so by cross it is easily infered that $75\, \%$ of the offspring are black and $25\, \%$ are brown
Standard 12
Biology
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