Black skin color is dominant to pink skin color in pigs. Two heterozygous black
ID: 182769 • Letter: B
Question
Black skin color is dominant to pink skin color in pigs. Two heterozygous black pigs are crossed. If these pigs produce a total of four piglets, what is the probability that two will be pink and two will be black?Decimal answer only. Submit Answer Tries 0/4 If these pigs produce a total of four piglets, what is the probability that three will be pink and one will be black? Decimal answer only. Submit Answer Tries 0/4 If these pigs produce a total of four piglets, what is the probability that one will be pink and three will be black? Decimal answer only. Submit Answer Tries 0/4Explanation / Answer
Answer: Here, Black skin color is dominant over pink skin color in pigs. So, black skin color can be represented as ‘BB’(dominant) and pink skin color as ‘bb’(recessive). The cross is made between 2 heterozygous pigs and therefore can be represented as Bb X Bb.
Therefore, probability of black = 3 / 4
probability of pink = 1 /
If these pigs produce a total of four piglets, the probability that two will be pink and two will be black is
= 1/4 * 1/4* 3/4 * 3/4
= 9/256
= 0.03%
If these pigs produce a total of four piglets, the probability that three will be pink and one will be black is
= 3/256
= 0.01%
If these pigs produce a total of four piglets, the probability that one will be pink and three will be black is
= 1/4* 3/4*3/4*3/4
= 27/256
= 0.105%
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