Saturday, January 26, 2013

Comparison between continuous and discontinuous variations

Continuous and discontinuous variations: Major differences
Continuous variations
Discontinuous variations
1.      They refer to small, indistinct differences from the normal condition.
They refer to large, conspicuous differences from the parents.
2.      They are already present in population.
They are new variations through similar variations might have occurred previously.
3.      They are also known as fluctuations.
They are also known as mutations or spurts.
4.      They are usually unstable and non-inheritable.
They are usually stable and heritable.
5.      They are due to chance segregation of genes during gamete formation, crossing over or chance combination during fertilization.
They are produced by change in genes or genome.
6.      They can be represented by smooth curve.
A curve is not produced.
7.      They are very common in all organisms.
They appear suddenly and in few cases only.

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