C. In a horse population, three different traits showing continuous distribution were measured, and their variances are shown in the table below: Variance Phenotypic Environmental Additive Dominance Cutting Ability 96.0 42.0 39 10 Traits Racing Speed 39.2 27.8 12.4 3.1 Jumping Ability 39 16.8 12.0 SALE 1. Calculate the broad sense and narrow sense heritabilities for each trait. 2. In the population of animals studied, which trait would respond best to selection for breeding purposes? Explain your answer.

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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.