Black Fur and White Coats
I am a researcher who is perform a cross between 2 mice, which both having black fur. Black for is dominant over white for. 75% of the offspring have black coats and 25% have white coats. The researcher can assume that the parents genotypes were most likely:
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1 solution
The ratio of black fur mice to white fur mice is 75% to 25%, which can also be said as a ratio of 3:1. This technically means that the offspring were BB, Bb, Bb, and bb. So, when you draw a Punnett Square to figure out the genotype of the parents, you get Bb x Bb , which is the answer to the question.