
Concept explainers
To analyze:
When cross-1 is done between white mutant A and white mutant B, the resulting F1 progeny is wild type (Purple). Analyze the results obtained from self-fertilization between F1 progeny and determine phenotypic ratio and phenotypic distribution among F2 progeny.
Introduction:
The condition mentioned above can be answered with the help of complementation test. Complementation test is performed in such a situation as it helps us understand whether the mutation that has occurred is cis mutation (mutation in same gene) or trans mutation (mutation in different set of gene). Complementation occurs when the progeny with normal (wild type) phenotype is observed from crossing between two organisms with different homozygous recessive mutation. On the other hand, complementation is not observed when mutation is in the same gene.
Mendel's second law is the law of independent assortment. According to this law, when cross is done for more than one trait (two or more), the traits organize independently (selection of one trait is not dependent on another), so different

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Chapter 4 Solutions
Genetic Analysis: An Integrated Approach (3rd Edition)
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