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.
Mendelian inheritance is the inheritance of traits controlled by a gene which will be dominant to the other.
*The pattern of Mendelian traits inheritance depends on whether the traits are controlled by genes present in autosomes or in sex chromosomes.
*Autosomal traits are controlled by on one of the 22 pairs of autosomes except X or Y chromosome. so autosomal traits are inherited for both the sexes from parents.
*Traits controlled by genes on sex chromosomes are called sex linked traits. If traits controlled by genes on X chromosome. These traits are called X linked traits. If controlled by y chromosome then it is called y linked traits.
Step by step
Solved in 3 steps
