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Biology-Related Homework Help Genetics and Developmental Biology Topic started by: Emsheppard on Mar 22, 2015



Title: In guinea pigs short fur (s) is dominant to long fur (s) and brown fur (B) is do
Post by: Emsheppard on Mar 22, 2015
In guinea pigs short fur (S) is dominanat to long fur (s) and brown fur (B) is dominant to white fur (b) a brown guinea pig with long fur that is homozygous for fur color is crossed with a white guinea pig that is a heterozygous for short fur what is the probability that the offspring will be brown with long fur?


Title: Re: In guinea pigs short fur (s) is dominant to long fur (s) and brown fur (B) is do
Post by: soccer_898 on Mar 22, 2015
1/2
If you do a Punnett square for fur color, all of the offspring will be heterozygous possessing brown fur so the probability of fur color is: 1
If you do a Punnett square for fur length, one half of the offspring will have long fur so the probability is: 1/2
By multiplying the probabilities of the two traits you get: 1 * 1/2 = 1/2


Title: Re: In guinea pigs short fur (s) is dominant to long fur (s) and brown fur (B) is do
Post by: bio_man on Mar 29, 2015
Emsheppard, did this solve your problem? If so, please mark the topic as solved.