Two organisms AABBCCDDEE and aabbccddEE are mated to produce an F1, which is sel
ID: 39439 • Letter: T
Question
Two organisms AABBCCDDEE and aabbccddEE are mated to produce an F1, which is selfed to produce F2. If capitals are dominant and all genes assort independently, write out the calculations (steps not just answers) to determine:
a) how many different genotypes will occur in the F2?
b) how many different phenotypes will occur in the F2?
c) what proportion of the F2 genotypes will be recessive for 4 of the 5 loci?
c) what proportion of the F2 phenotypes will exhibit only the dominant traits of gene A, C, and E?
Explanation / Answer
On crossing AABBCCDDEE and aabbccddEE the gametes produced will be ABCDE and abcdE respectively. The genotype of the F1 hybrid would be AaBbCcDdEE.
On self crossing F1 hybrids the gametes produced and possible genotypes of the F2 offspring are represented in the Punnets
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