Key to problems 1 and 2 Y_ = yellow endosperm yy = white endosperm Both C_ and R
ID: 52871 • Letter: K
Question
Key to problems 1 and 2
Y_ = yellow endosperm
yy = white endosperm
Both C_ and R_ must be present for pigment in aleuron.
Pr_ produces purple aleuron.
prpr produces red aleuron.
CI_ inhibits all pigment in the aleuron.
E1:
Endosperm
P1 CCrrprpryy x ccRRprpryy
What are the phenotypes of the parents?
What is the genotype and phenotype of the F1?
What are the expected genotypic and phenotypic ratios in the F2 offspring?
Explain your genetic model.
Key to problems 1 and 2
Explanation / Answer
The phenotype of parents is No pigment with yellow endosperm.
The genotype of F1 CCRRprpryy, ccrrprpryy, CcRrprpryy, phenotypes are Red aleuron yellow endosperm, No pigment yellow endosperm, Red aleuron yellow endosperm.
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