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An adaptation is a feature or characteristic that allows an organism to live and survive successfully in a habitat. Animals living in cold environments, such as the polar bear, may have a small surface area ...

First off we need to understand what natural selection is. Natural selection is the mechanism proposed by Charles Darwin in his theory of evolution. The key points you need to know for this are: 1) that indi...

Homozygous means there are two copies of the same allele present at a specific locus (position) on a chromosome, e.g. two copies of the allele for blue eyes. Whereas, heterozygous means there are two copies ...

Simply put, it is a form of a gene which can lead to different phenotypes, e.g. eye colour. There is one allele that codes for blue eyes and another allele that codes for brown eyes.

A punnett square is a diagram that is used to predict the outcome of a particular cross or breeding experiment. This can be used for plants, animals and humans.