Which of the following are NOT potential consequences of the loss of genetic variability for tiger populations? A. Increased homozygosity can lead to the expression of deleterious recessive alleles B. Increases the ability of the population to adapt to changes in the environment C. Decreases the probability that the population can withstand a disease outbreak D. Increases the risk of extinction for 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.
The loss of genetic variability within populations is an important concern for conservation biologists when trying to conserve a species whose numbers have been greatly reduced due to loss of habitat. This is true for the example of the Bengal Tiger, Clemson’s mascot. This reduction of genetic variability in small populations affects their evolutionary potential. Which of the following are NOT potential consequences of the loss of genetic variability for tiger populations?
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