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Hardy-Weinberg Model quiz #1

컨트롤 버튼이 '내비게이션' 모드로 변경되었습니다.
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  • What is inbreeding and how does it affect genetic variation in a population?
    Inbreeding is mating between relatives, which increases homozygosity and decreases genetic variation in a population.
  • What is inbreeding depression?
    Inbreeding depression is a decline in average fitness due to increased homozygosity and decreased heterozygosity.
  • How does homozygosity affect the fitness of a population?
    Increased homozygosity generally decreases fitness because it reduces genetic variation.
  • What is the difference between intersexual and intrasexual selection?
    Intersexual selection involves mate choice between sexes, while intrasexual selection involves competition within the same sex for mating rights.
  • How does sexual dimorphism relate to sexual selection?
    Sexual dimorphism, phenotypic differences between males and females, often results from sexual selection where one sex prefers certain traits in mates.
  • What is an example of intersexual selection in birds?
    Peacocks use intersexual selection, where males display impressive tail feathers to attract females.
  • How can intersexual selection negatively impact a species?
    Intersexual selection can lead to exaggerated traits that hinder survival, such as antlers so large they impair movement.
  • What is the Hardy-Weinberg equilibrium?
    The Hardy-Weinberg equilibrium is a principle stating that allele and genotype frequencies in a population remain constant in the absence of evolutionary influences.
  • What are the conditions required for Hardy-Weinberg equilibrium?
    Conditions include no mutation, random mating, no gene flow, infinite population size, and no selection.
  • What is the significance of allele frequencies in the Hardy-Weinberg model?
    Allele frequencies help determine if a population is evolving or in genetic equilibrium.
  • How does genetic drift affect small populations?
    Genetic drift can cause significant changes in allele frequencies in small populations, leading to reduced genetic variation.
  • What is the bottleneck effect?
    The bottleneck effect is a sharp reduction in population size due to environmental events, leading to decreased genetic diversity.
  • What is the founder effect?
    The founder effect occurs when a new population is established by a small number of individuals, leading to reduced genetic variation.
  • How does gene flow affect genetic variation?
    Gene flow, the transfer of alleles between populations, increases genetic variation within a population.
  • What is the role of mutation in genetic variation?
    Mutations introduce new alleles into a population, increasing genetic variation.
  • What are the basic components of the Hardy–Weinberg model?
    The basic components of the Hardy-Weinberg model include the assumptions of random mating and no evolution (no changes to allele frequencies). The model predicts genotype frequencies in a diploid population with two alleles using the equation p^2 + 2pq + q^2 = 1.