Genetic drift is a. a change in allele frequencies due to random fluctuations. b. likely to result in allele loss or fixation over the long run. c. more pronounced in smaller populations. d. all of the above.
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.
Genetic drift is
a. a change in allele frequencies due to random fluctuations.
b. likely to result in allele loss or fixation over the long run.
c. more pronounced in smaller populations.
d. all of the above.
The relative frequency of variant of gene or allele present at a particular locus, which could be expressed as percentage or fraction is known as allele frequency or gene frequency. Over the time the change in frequencies in a particular population is due to microevolution. The organisms living in the same geographical area with the capability to interbreed is termed as population.
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