Genetics - Research Article from Macmillan Science Library: Animal Sciences

This encyclopedia article consists of approximately 6 pages of information about Genetics.
This section contains 1,684 words
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Inheritance Through Reproduction Produces Genetic Variation

The difference among genotypes is referred to as genetic variation. There is genetic variation at one gene when different individuals have different combinations of alleles. Genetic variation also refers to the combination of alleles at different genes. Different phenotypes reflect underlying genetic variation. People with blonde hair and blue eyes have a different genotype and phenotype than people with brown hair and brown eyes. This difference is genetic variation.

In asexual reproduction, the parent and offspring have identical DNA. Mitosis is one form of cell division that produces daughter cells that are identical to the mother cell. Asexual reproduction results in clones, organisms that are identical to each other genetically.

Sexual reproduction produces offspring that are the combination of the genetic makeup of two individuals. In humans, a baby gets half of its genetic material from its mother and half from its father...

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This section contains 1,684 words
(approx. 6 pages at 300 words per page)
Buy the Genetics Encyclopedia Article
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Macmillan Science Library: Animal Sciences
Genetics from Macmillan Science Library: Animal Sciences. Copyright © 2001-2006 by Macmillan Reference USA, an imprint of the Gale Group. All rights reserved.
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