There are several important things to keep
in mind about genes:
| Genes makes us what we are. | Genes actually occur in pairs. |
Alleles can be dominant, recessive, or co-dominant when paired together on a chromosome. When two traits are co-dominant, they are both expressed as in the example of the type AB blood.
The way alleles are paired can be
defined in one of three ways:
Homozygote
Heterozygote
Homozygote recessive
The chromosome, or "colored bodies"
from chromo (color) and 
soma (body), are threads
located in the cell's nucleus. These threads determine our make up. Genes
are located along these threads and it is actually the genes that determine
what we look like.
Basic Terminology and Concepts Necessary to Understand Genetics | |
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