The heritability for egg weight in a group of chickens on a farm inMaine is 0.95. Are the following statements regarding this heritabilitytrue or false? If a statement is false, explain why.A. The environment in Maine has very little effect on the outcomeof this trait.B. Nearly all of the phenotypic variance for this trait in this groupof chickens is due to genetic variance.C. The trait is polygenic and likely to involve a large number ofgenes.D. Based on the observation of the heritability in the Mainechickens, it is reasonable to conclude that the heritability foregg weight in a group of chickens on a farm in Montana isalso very high.
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 heritability for egg weight in a group of chickens on a farm in
Maine is 0.95. Are the following statements regarding this heritability
true or false? If a statement is false, explain why.
A. The environment in Maine has very little effect on the outcome
of this trait.
B. Nearly all of the
of chickens is due to genetic variance.
C. The trait is polygenic and likely to involve a large number of
genes.
D. Based on the observation of the heritability in the Maine
chickens, it is reasonable to conclude that the heritability for
egg weight in a group of chickens on a farm in Montana is
also very high.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
