A situation in which hybrids are less successful (lower fitness) than individuals from either parent population will lead to which type of situation?
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A situation in which hybrids are less successful (lower fitness) than individuals from either parent population will lead to which type of situation?
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- How Can We Measure Allele Frequencies in Populations? In a population where the females have the allelic frequencies A = 0.35 and a = 0.65 and the frequencies for males are A = 0.1 and a = 0.9, how many generations will it take to reach HardyWeinberg equilibrium for both the allelic and the genotypic frequencies? Assume random mating and show the allelic and genotypic frequencies for each generation.A scientist is studying a wild population of Japanese morning glories. It is easy to separate genotypes at a flower color locus by their phenotypes. Red individuals are homozygous for the R allele, yellow individuals are homozygous for the Y allele, and orange individuals are heterozygous. If the number of individuals with the following genotypes are: RR: 831 RY: 33 YY: 442 Is the population in Hardy Weinberg Equilibrium?Explain The mating of parents with antagonistic traits produces hybrids?
- In a population of 500 individuals in Near East, the frequencies of the dominant and recessive alleles for autosomal recessive genetic disease PKU are 0,89 and 0,11 respectively. A is used to indicate the dominant allele, a is used to indicate the recessive allele. Assuming random mating, what are the expected genotype frequencies?Consider a greenhouse with 500 carnation plants. 280 plants are homozygous for the red allele (RR), 120 plants are heterozygous (Rr), and 100 plants are homozygous for the white allele (rr). What is the frequency of the red allele? What is the frequency of the white allele?About 7% of men in a population are red-green colour blind due to a sex-linked recessive gene. Assuming random mating in the population with respect to colour blindness; c) What percentage of men would be colour blind in the next generation?
- In a Lebanese population, the frequency of the IO allele is 0.67, while the frequency of the D allele (Rh locus) is 0.6. The two loci are independently assorting. What is the frequency of individuals with blood type O+? Assume mating in the population is randomDiscuss how assortative mating can influence genotype frequencies. Are there any potential detrimental consequences resulting from these outcomes? Explain your reasoningExplain the disruptive selection effects on the phenotypic mean and the amount of phenotypic variation present in a population.
- Under the above conditions of reproductive discrimination against those with attached earlobes, if the population in this next generation is still 500,000 people, then the new genotypic frequencies will be: Homozygous dominants, unattached ear lobes: 0.34 Heterozygotes, unattached ear lobes: 0.48 Homozygous recessives, attached ear lobes: 0.18 What will be the allele frequencies for L and l in this generation? Did the frequency of the recessive allele (l), as compared to its frequency calculated in Part B, increase or decrease because of its deleterious effects on fitness? Does the possession of the recessive allele kill those who possess it? If those with attached ear lobes continue to be only half as successful in securing mates in each successive generation, what will happen to the frequency of the recessive allele in this population?In garden pea plants, the yellow seed colour (Y) is dominant over the green seed colour (y). In a population of 24 pea plants, 15 pea plants are homozygous dominant, 6 are heterozygous dominant, and 3 are recessive. Find the frequency of the following YY, Yy, yy. Show all work and record your response using three significant digits.What is the expected frequency of heterozygotes in a population with allelic frequencies xand y that is in Hardy–Weinberg equilibrium?a. x + yb. xyc. 2 xyd.( x − y)2