The following is a list of the phenotypic classes recovered among the offspring
ID: 63885 • Letter: T
Question
The following is a list of the phenotypic classes recovered among the offspring from a testcross of a trihybrid genotype (AaBbCc). The number of individuals in each class is indicated. What is the order of the three genes?The following is a list of the phenotypic classes recovered among the offspring from a testcross of a trihybrid genotype (AaBbCc). The number of individuals in each class is indicated. What is the order of the three genes?
ABC 1
aBC 85
AbC 8
ABc 420
Abc 75
aBc 11
abC 400
abc 0
What is the order of these three genes in the chromosome?
1) ABC
2) CAB
3) ACB
Explanation / Answer
3) ACB
Genotype most frequently are parental genotype
Double crossover gametes are lowest frequency and are recombinant ..next step is to effectively place non parental allele of middle gene onto a chromosome with parental allele ..
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