Three genes in fruit flies affect a particular trait, and at least one dominant allele of each gene is necessary to get a wild-type phenotype. a. What phenotypic ratio would you predict among the progeny if you crossed triply heterozygous flies? b. You cross a particular wild-type male in succession with three tester strains. In the cross with one tester strain (AA bb cc), only 1/4 of the progeny are wild type. In the crosses involving the other two tester strains (aa BB cc and aa bb CC), half of the progeny are wild type. What is the genotype of the wild-type male? (Pls help asap!!)
The genotype is the collection of genes in our DNA that are responsible for a specific trait. The phenotype is determined by the chemical composition of the DNA. Organisms with even minor genetic differences are said to have diverse genotypes. Homozygous recessive (pp), homozygous dominant (PP), and heterozygous genotypes are the three types of genotypes (Pp). The phenotypes of homozygous dominant and heterozygous genotypes are the same.
Although genotype and phenotype are distinct entities, they are inextricably linked. The physical qualities exhibited in an organism as a result of the expression of an individual's genes are referred to as phenotypes. An individual's phenotype is determined by his or her genotype.
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