with solid-color fur or with white patches of fur. Wildcats are the genetic ancestors of the domestic cat and have fur color that blends into their environment. Wildcats that eliminated pests and were less afraid of humans were useful for protecting harvested grains. These cats were cared for by humans and were selected to reproduce. During embryonic development, certain stem cells determine whether a kitten will be born with solid-color fur or with white patches of fur. Wildcats are genetic ancestors of the domestic cat and have fur color that blends into their environments. Wildcats that eliminated pests and were less afraid of humans were useful for protecting harvested grains. These cats were cared for by humans and were selected to reproduce.
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.



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