Attempt giving a clear definition of the term species.
Species can be defined as a group of organisms, which have the capability to interbreed in order to produce fertile offspring.
Definitions / Explanation : Saltation
Had Darwin been aware of Mendel’s work, would he been able to explain the origin of variations. Discuss.
$A$ : Mutations are non-directional. $R$ : Darwin’s small variations are directional.
Which one of the following was the contribution of de Vries
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