which of the following statements about genetic variation in a population is true? course hero

Does mutation explain the high levels of variation in quantitative traits?

Oct 17, 2020 · 14) Which of the following is a true statement concerning genetic variation? A) It must be present in a population before natural selection can act upon the population. B) It arises in response to changes in the environment. C) A population that has a higher average heterozygosity has less genetic variation than one with a lower average heterozygosity.

What are the parameters in the population genetics of mutations?

Jun 13, 2016 · o Four of these statements are true . Whenever diploid populations are in Hardy-Weinberg equilibrium at a particular locus . . o The allele's frequency should not change from one generation to the next, but its representation in homozygous and heterozygous genotypes may change. In the formula for determining a population's genotype frequencies, the 2 in the term 2pq

What is a major theoretical goal in the study of mutations?

51. Which of the following is a true statement concerning genetic variation? a. It must be present in a population before natural selection can act upon the population. b. It is created by the direct action of natural selection. c. It arises in response to changes in the environment. d.

Why study population genetics?

Feb 03, 2016 · 9) Which statement about variation is true? A) All phenotypic variation is the result of genotypic variation. B) All genetic variation produces phenotypic variation. C) All nucleotide variability results in neutral variation. D) All new alleles are the result of nucleotide variability. E) All geographic variation results from the existence of clines.

What is crossing over in meiosis?

Crossing over is a biological occurrence that happens during meiosis when the paired homologs, or chromosomes of the same type, are lined up. In meiosis, they're lined up on the meiotic plates, [as they're] sometimes called, and those paired chromosomes then have to have some biological mechanism that sort of keeps them together.

What is the meaning of crossing over?

Crossing Over. =. Crossing over is the swapping of genetic material that occurs in the germ line. During the formation of egg and sperm cells, also known as meiosis, paired chromosomes from each parent align so that similar DNA sequences from the paired chromosomes cross over one another. Crossing over results in a shuffling ...

Why is population genetics important?

Population genetics is fundamental to our understanding of evolution, and mutations are essential raw materials for evolution. In this introduction to more detailed papers that follow, we aim to provide an oversight of the field. We review current knowledge on mutation rates and their harmful and beneficial effects on fitness ...

Why is epistasis important?

Even if multiplicative/additive models are not refuted by the data, work on epistasis is important for understanding the population genetics of mutations, particularly to address questions about long-term evolution.

Who is Brian Charlesworth?

Brian Charlesworth has been at the forefront of many of the developments in the population genetics of mutations, both in the collection and analysis of new data and in providing new models to explain the observations he and others have made.