Question

Define gene, heredity and variation
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Answer 1

Explanation:

Gene: is a unit of heredity which is transferred from a parent to offspring

Heridity: the passing of physical and mental characteristics genetically from one generation to another

Variation: is a difference between individuals within a species

Answer 2

heredity :

In the simplest of words, heredity refers to the passing of traits or characteristics through genes from one generation (parent) to the other generation (offspring). Heredity is very evidently seen in sexual reproduction. This is because, in this process, the variation of inherited characteristics is high.

gene :

A gene is the basic physical and functional unit of heredity. Genes are made up of DNA. Some genes act as instructions to make molecules called proteins. However, many genes do not code for proteins. In humans, genes vary in size from a few hundred DNA bases to more than 2 million bases.

variation :

Variation, in biology, any difference between cells, individual organisms, or groups of organisms of any species caused either by genetic differences (genotypic variation) or by the effect of environmental factors on the expression of the genetic potentials (phenotypic variation).

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