Which of the following statements about complex traits is/are TRUE? Twin studies help to tease apart the contribution of genetic and environmental factors to phenotypic variations. When describing quantitative traits, a high variance indicates that most individual values are not very close to the mean. Genetic factors determine Mendelian traits, while environmental factors determine complex traits. Both additive and dominant effect falls in the category of narrow sense heritability and can be directly passed on from parents to offspring.
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.
Which of the following statements about complex traits is/are TRUE?
|
|
Twin studies help to tease apart the contribution of genetic and environmental factors to |
|
|
When describing quantitative traits, a high variance indicates that most individual values are not very close to the mean. |
|
|
Genetic factors determine Mendelian traits, while environmental factors determine complex traits. |
|
|
Both additive and dominant effect falls in the category of narrow sense heritability and can be directly passed on from parents to offspring. |
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
