Archive | Evolution

Mechanisms of Reproductive Isolating | Evolution | Biology

A reproductive isolating mechanism is a structural, functional, or behavioural characteristic that prevents successful reproduction from occurring between different species. This helps in accumulating genetic variations in species. If reproductive isolation does not exist, variant forms freely interbreed with the normal forms and this would lead to intermixing of their genotypes. These mechanisms are of two types: 1. Pre-Mating Mechanisms: [...]

By |2017-08-09T19:42:35+00:00August 9, 2017|Reproductive Isolating|Comments Off on Mechanisms of Reproductive Isolating | Evolution | Biology
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Darwinism Theory of Evolution (With Criticism) | Biology

In this article we will discuss about the Darwinism theory of evolution with its criticism. In 1831, Charles Darwin on a voyage on HMS Beagle for five years noted the flora, fauna and geology of the islands of the South Pacific and collected numerous living and fossil specimens. He also sailed to the Galapagos Islands about 600 miles from the [...]

By |2017-08-09T19:42:35+00:00August 9, 2017|Darwinism Theory of Evolution|Comments Off on Darwinism Theory of Evolution (With Criticism) | Biology
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Adaptations and its Categories | Ecology | Branches | Biology

Organisms are equipped in a number of ways to cope with their environment. The adjust­ments made by the individuals in response to the specific environmental conditions are known as adaptations. Adaptations are structural or physiological characteristics that allow an organism to exist under the conditions imposed by its habitat. All organisms have adaptations that help them survive and thrive. Some [...]

By |2017-08-09T19:42:35+00:00August 9, 2017|Adaptations|Comments Off on Adaptations and its Categories | Ecology | Branches | Biology
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