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A population is any group of many individuals of the same species. A population is a group of individuals that live in the same area and that regularly interbreed. A population is a group of interacting species that live in the same area. A population is two or more groups that regularly interbreed.
Sexual selection is an evolutionary force that restores or maintains diversity within a population. Migration is an evolutionary force that restores or maintains diversity within a population. Hardy-Weinberg equilibrium is an evolutionary force that restores or maintains diversity within a population. Inbreeding is an evolutionary force that restores or maintains diversity within a population.
the Hardy-Weinberg model a model that describes what happens during an artificial selection experiment a model of what happens to a locus with no genetic diversity a model of what happens when no evolutionary forces are acting in a population
Evolution is natural selection. Evolution is the same as Hardy-Weinberg equilibrium. Hardy-Weinberg equilibrium occurs when there is no evolution. Evolution is an example of Mendelian inheritance.
The circumstance occurs when evolution by natural selection increases the fitness of individuals. The circumstance occurs when none of the four evolutionary forces is acting and mating is random. The circumstance occurs when new species differentiate. The circumstance occurs when individuals in a population are not mating randomly with respect to the MHC genotype.
A population consists of more heterozygous individuals than expected under the Hardy-Weinberg principle. Parents with similar MHC alleles produce more offspring than parents with dissimilar MHC alleles. Individuals in a population are nonrandomly mating without inbreeding depression. Individuals heterozygous at a given locus are more fit than homozygous individuals.
Mutation is not a major concern. Inbreeding is not a major concern. Genetic drift is not a major concern. Migration is not a major concern.
Migration increases the mutation rate among sedentary organisms. Migration moves individuals from one habitat to another on a seasonal basis. Migration tends to separate allele frequencies among populations. Migration tends to reduce genetic differences among populations.
Drift is greatest in fixed populations. Drift is greatest in small populations. Drift is greatest in migrating populations. Drift is greatest in large populations.
extremely low genetic diversity in cheetahs fixed loci in endangered plant populations no variation in whooping crane vocalizations long, thin necks in giraffes
Individual plants self-fertilize. Allele frequencies change in a population. The frequency of homozygote genotypes increases in a population. Individuals in a population experience reduced fitness.
Alpine skypilots evolve large flowers above the timberline and small flowers below the timberline. Natural selection simultaneously selects against heavy field mice (they starve during winter) and light field mice (they freeze during winter). Natural selection causes dragonflies to evolve longer tails.
They are both forms of nonrandom mating. They both lead to adaptation. They both cause evolutionary change. They both affect all loci in a genome.
Female fitness is limited most by the ability to get resources for producing eggs and rearing young, while male fitness is limited by the ability to get resources for provisioning the female. Female fitness is limited most by the ability to attract males, while male fitness is limited by the ability to get resources for provisioning the female. Female fitness is limited most by the ability to get resources for producing eggs and rearing young, while male fitness is limited by the ability to attract females. Female fitness is limited most by the ability to attract males, and male fitness is limited by the ability to attract females.
natural selection genetic drift mutation migration
Environments change, so different alleles become more fit. Genetic drift causes random changes in allele frequencies. Mutations introduce new variation into a population. All of the above processes impede, constrain, or prohibit evolution by natural selection.
