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You cross a mouse with black and white pokedot coat colour with a true-breeding line for...

You cross a mouse with black and white pokedot coat colour with a true-breeding line for black coat colour. 720 progeny are produced in the F1 generation comprised of 320 black and 380 black and white pokedot coat colour. This observation could be best explained by:

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Answer #1

Ans. Here mouse true breeding line for black coat color can be represented by BB. As black and white polka dot coat color shows an intermediate species or progeny which is a resultant of codominance of parent species with black coat and white coat color. Thus here let, Black and white coat color will be represented by BPB.

The cross between the true breeding black coat color mouse and balck and white coat color mouse is show below :

Thus, the progeny will have phenotypic ratio of 1:1. As it is mendalian monohybrid cross ratio.

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