1. In a population of plants, flower color is controlled by a single gene with two alleles (P and p). PP individuals have purple flowers, Pp individuals have pink flowers, and pp individuals have white flowers. Suppose you randomly sampled 100 individuals from the population and found that 75% of the plants had purple flowers, 20% had pink flowers, and 5% had white flowers. a. With regard to the flower color gene, is the population in Hardy-Weinberg equilibrium? Use the space below to show your work. Critical value df=1= 3.841 b. n a second population of the same kind of plants, 16% of the plants have white flowers. Assuming a) that flower color is controlled by the same gene as in the first population, b) that there are the same two alleles as in the first populations, and c) that the population is in Hardy-Weinberg equilibrium, what proportion of the plants should have pink flowers in this second population? Show your work.
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.
1. In a population of plants, flower color is controlled by a single gene with two alleles (P and p). PP individuals have purple flowers, Pp individuals have pink flowers, and pp individuals have white flowers. Suppose you randomly sampled
100 individuals from the population and found that 75% of the plants had purple flowers, 20% had pink flowers, and 5% had white flowers.
a. With regard to the flower color gene, is the population in Hardy-Weinberg equilibrium? Use the space below to show your work. Critical value df=1= 3.841
b. n a second population of the same kind of plants, 16% of the plants have white flowers. Assuming a) that flower color is controlled by the same gene as in the first population, b) that there are the same two alleles as in the first populations, and c) that the population is in Hardy-Weinberg equilibrium, what proportion of the plants should have pink flowers in this second population? Show your work.
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