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8 wrz 2021 · Factors like mutation, migration, genetic drift, non-random mating, and natural selection can cause frequencies to change and drive evolution. This document discusses key concepts in population genetics. It begins by defining population genetics as the study of allele frequency changes within a population over time.
- Evolutionary Genetics
Animals experience gene flow when individuals leave a family...
- Evolutionary Genetics
6 lip 2023 · Animals experience gene flow when individuals leave a family group or herd to join other populations. The flow of individuals in and out of a population introduces new alleles and increases genetic variation within that population.
16 mar 2017 · Mutations and genetic recombination introduce genetic variation within populations. Natural selection acts on this variation, favoring traits that increase reproductive success. Over generations, this leads to adaptation and evolution of populations as allele frequencies change.
Movement of individuals from one subpopulation to another followed by random mating. Movement of gametes from one subpopulation to another followed by fertilization. Results in movement of alleles between populations (GENE FLOW).
21 paź 2014 · Presentation Transcript. Gene flow • Natural populations of a species typically are not completely isolated, but instead exchange genes with one another to a greater or lesser extent • Gene flow, if unopposed by other factors, homogenizes a population.
Gene flow is the passage and establishment of genes typical of one population in the genepool of another by natural or artificial hybridization and backcrossing. In the drawing above, population Y has a higher frequency of allele a (q = 0.90).
Gene flow — also called migration — is any movement of individuals, and/or the genetic material they carry, from one population to another. If genetic variants are carried to a population where they previously did not exist, gene flow can be an important source of genetic variation.
