Your dream has come true, you’re a marine biologist studying Narwhals in the arctic. They have been trying to understand the heritability of tusk length in this species. You are able to take measurements of them in the wild, and in an aquarium where they are treated well with temperature-controlled pools, and a standardized diet. Within the aquarium, there is no environmental variation. In the wild, the total variance was determined to be 10 feet. In the aquarium, total variance between subjects was found to be 3 feet. A-In the aquarium, what is the Vgenetic ? B-In the aquarium, VEnvironmental is ?
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.
Your dream has come true, you’re a marine biologist studying Narwhals in the arctic. They have been trying to understand the heritability of tusk length in this species. You are able to take measurements of them in the wild, and in an aquarium where they are treated well with temperature-controlled pools, and a standardized diet. Within the aquarium, there is no environmental variation.
In the wild, the total variance was determined to be 10 feet. In the aquarium, total variance between subjects was found to be 3 feet.
A-In the aquarium, what is the Vgenetic ?
B-In the aquarium, VEnvironmental is ?
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