The centromeric position of a chromosome can be represented by centromeric index (CI), which is given by of the ratio between the length of the shorter arm and the whole length of the chromosome or p/q + p Ob. by arm ratio (AR), which is the length of the long arm divided by the length of the short arm or q/p Oc the distance between the primary and secondary constrictions on the chromosome O d. A) and B) are correct, but ) is not correct O e All statements: A), B) and C) are correct
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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