Two pure-breeding mutant plants produce white flowers. When they are crossed, all of the progeny have wild-type purple flowers. What does this genetic complementation tell you? A) The genes are part of two distinct biosynthetic pathways. B) The two lines exhibit different mutations in the same gene. C) More than one gene is involved in determining the phenotype. D) The allele is pleiotropic. E) The allele exhibits incomplete dominance.
Genetic Variation
Genetic variation refers to the variation in the genome sequences between individual organisms of a species. Individual differences or population differences can both be referred to as genetic variations. It is primarily caused by mutation, but other factors such as genetic drift and sexual reproduction also play a major role.
Quantitative Genetics
Quantitative genetics is the part of genetics that deals with the continuous trait, where the expression of various genes influences the phenotypes. Thus genes are expressed together to produce a trait with continuous variability. This is unlike the classical traits or qualitative traits, where each trait is controlled by the expression of a single or very few genes to produce a discontinuous variation.
Two pure-breeding mutant plants produce white flowers. When they are crossed, all of the progeny have wild-type purple flowers. What does this genetic complementation tell you?
A) The genes are part of two distinct biosynthetic pathways.
B) The two lines exhibit different mutations in the same gene.
C) More than one gene is involved in determining the
D) The allele is pleiotropic.
E) The allele exhibits incomplete dominance.
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