Genetic variation _______. (Choose an answer.) 1. is created by the direct action of natural selection. 2. arises in response to changes in the environment. 3. must be present in a population before natural selection can act upon the population.
Genetic Variation
Genetic variation refers to the variation in the genome sequences between individual organisms of a species. Individual differences or population differences can both be referred to as genetic variations. It is primarily caused by mutation, but other factors such as genetic drift and sexual reproduction also play a major role.
Quantitative Genetics
Quantitative genetics is the part of genetics that deals with the continuous trait, where the expression of various genes influences the phenotypes. Thus genes are expressed together to produce a trait with continuous variability. This is unlike the classical traits or qualitative traits, where each trait is controlled by the expression of a single or very few genes to produce a discontinuous variation.
1. is created by the direct action of natural selection.
2. arises in response to changes in the environment.
3. must be present in a population before natural selection can act upon the population.
Step by step
Solved in 2 steps
