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.
- What is variation? Give its importance.
- What are the possible causes of variations? Give specific examples.
- How would you know or identify if the cause of variation is genetic, environmental, or both?
- Classify these variations as to "species characteristics" or "individual characteristics".
Thorns in the stalk of the rose flower
Body size of ants
Color of apple skin
Color mosaic in San Francisco leaf
Number of body segments in worm
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