Which of the following is NOT a potentially negative impact of genetic drift in a population?   Maladaptive alleles could become fixed   Populations might become homogenised, slowing down speciation   A loss of genetic diversity leaves populations more vulnerable to environmental changes   A loss of genetic diversity increases the probability that a population will be subject to inbreeding depression

Genetic drift differs from gene flow in that Group of answer choices genetic drift occurs at a steady, but low, rate in all populations while gene flow is largely random event occurring in small populations. genetic drift is most likely to produce a loss of genetic diversity in a population whereas gene flow will often increase genetic diversity in a population. none of these choices adequately describe the difference between genetic drift and gene flow. genetic drift is based on female choice of particular mates but gene flow is largely a product of natural selection.

Genetic drift: is variation in the relative frequency of different genotypes in a small population, owing to the chance disappearance of particular genes as individuals die or do not reproduce. is the same as the process of natural selection. does not rely on chance. cannot explain variation in genotypes within populations.

Two types of genetic drift effects are: the founder effect, in which a few members of a larger population leave to form a new population, and population bottlenecks, where only a few members of a population survive an event. Categorize the examples below as to whether a founder effect or a population bottleneck is more likely. (Four examples describe each of the two types of genetic drift) The human population of Easter Island exhibits a limited gene pool. The Wollemi pine of Australia was thought to be extinct until it was discovered growing in a secluded canyon. The Afrikaner population in South Africa descended from a small number of Dutch colonists and now has a high rate of Huntington disease. A mass extinction event 12,000 years ago eliminated about 75% of cheetahs. Cheetahs are now genetically similar Semi-domesticated reindeer were introduced into Iceland in 1787 from Norway. The Toba supereruption ~73,000 years ago may have reduced the human population of Earth to 3,000-…

All of the following evolutionary mechanisms have the potential to result in divergence between two allopatric populations, except:  - sexual selection - Migration - Natural selection - All of the provided mechanisms can result in divergence. - Nonrandom mating

Which part of these statements isn't right ?       A species is a group of organisms that can potentially interbreed with one another to produce viable, fertile offspring. Speciation is when two new species form from one original one. Sympatric speciation occurs when there is a geographic separation of a population. Allopatric speciation occurs while the population remains in the same area. Adaptive radiation occurs when one species evolves into many to fill several different niches. Natural selection requires traits to be passed from parent to offspring, more offspring are produced than can survive creating competition, and inherited traits vary among offspring. Fossils, Anatomy and embryology, biogeography, and molecular biology all provide support for the theory of evolution. Evolution can be driven by many different things. Mutations are changes in DNA that create new alleles in a population. Gene flow is the flow of alleles in and out of a population resulting from the migration…

Which of the following are factors that can impact genetic variation in a population? (Select all that apply.) Lack of natural selection Random mating Mutation | Migration

The following table provides phenotypic data for a population of mammoths living in cold environments based on fossil and DNA evidence. Based on this data and your knowledge of natural selection, which explanation best explains the trends seen in the data? Individuals with thicker fur had a survival advantage in the cold environment, allowing these individuals to reproduce more often and create more offspring.   Individuals within this population of mammoths tend to only mate with individuals that have thick fur.   This population of mammoths appear to be in Hardy-Weinberg equilibrium since no allele frequencies are changing over time.   Individuals with thick fur migrated into the population of mammoths, increasing the proportion of these individuals.