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Genetics polygenic inheritance & probability

by shawonna23
Tags: genetics, inheritance, polygenic, probability
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shawonna23
#1
Jul7-10, 09:10 PM
P: 146
1. The problem statement, all variables and given/known data

Height is a characteristic resulting from polygenic inheritance. If genes at four loci code for height, what is the probability that parents with the genotypes RrSSTtUu and RrSsTtUU will have a child possessing 8 tall alleles?
Choose one answer.
a. 1/128
b. 1/256
c. 0
d. 1/64



2. Relevant equations[/b]

PUNNET SQUARES

3. The attempt at a solution[/b]
1/64

1/4 RR, 1/2 SS, 1/4 TT, 1/2 UU

1/4 * 1/2 * 1/4 * 1/2= 1/64
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redpenguin
#2
Jul7-10, 11:13 PM
P: 33
Exactly, I'm glad you see the pattern. Genetics is pretty fun once you get the hang of it.
shawonna23
#3
Jul7-10, 11:38 PM
P: 146
Thanks!


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