1)Flower colour in snapdragon plants is a single gene trait controlled by two alleles. In a population of 235 plants, 72% of the alleles are recessive. What is the frequency of the dominant allele in the gene pool? Record your answer as a value between 0 and 1 rounded to two decimal places. Answer
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)Flower colour in snapdragon plants is a single gene trait controlled by two alleles.
In a population of 235 plants, 72% of the alleles are recessive. What is the frequency of the dominant allele in the gene pool?
Record your answer as a value between 0 and 1 rounded to two decimal places.
Answer
2)In mice, the waltzing allele (w) that causes the mouse to run in circles due to an inner ear defect is recessive to the non-waltzing allele (W).
In an ideal mouse population exhibiting Hardy–Weinberg equilibrium of 150 mice, 70% of the alleles are non-waltzing. What is the frequency of the recessive allele?
Record your answer as a whole number percentage.
Answer%
3)Grey eyes (b) are recessive to brown eyes (B) in rabbits. In an ideal rabbit population exhibiting Hardy–Weinberg equilibrium, if allele b has a frequency of 0.33, what percentage of the population is heterozygous for this trait?
Round your answer to the nearest whole number.
Express your answer using three significant digits.
In an ideal horse population exhibiting Hardy–Weinberg equilibrium, 15 out of every 150 foals have a white coat. Calculate the frequency of the black horse coat allele in the population.
Express your answer using two significant digits.
6)In garden pea plants, round seeds (R) are dominant to wrinkled seeds (r). In an ideal pea plant population exhibiting Hardy–Weinberg equilibrium, 35 pea plants out of 53 have wrinkled seeds.
Calculate the frequency of homozygous round pea plants in the population.
Express your answer using two significant digits.
Calculate the number of mice that are heterozygous dominant for the fur colour gene in the population.
Express your answer rounded to the nearest whole number.
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