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Answer to Question #91592 in Genetics for Tatyana Taylor

Question #91592
In rabbits short hair S is dominant over long hair s. In the cross Ss x Ss what is the probability of three offspring all having long hair
Expert's answer

Ss x Ss

F1 SS - 25 % and Ss - 50 % - rabbits with short hair, because S is a dominant gene;

ss - 25 % - rabbits with long hair;

If the probability of one offspring with long hair is 25%, then the probability of three offsprings with long hair we will count out using the law:

If 2 events are independent, then the joint probability is a product of several probabilities.

The probability of one offspring with long hair is: 0.25, then

P = 0.25 * 0.25 * 0.25 = 0.015625 or 1.5625 %.

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