Genesis:  Glossary of Biological Terms.

The study of inheritance in relation to the study of health and growth.

Every individual has certain distinguishable characteristics which they inherited by their parents through genes.

A microscopic strand found in the Nucleus of a cell, that consists of thousands of genes and determines numerous characteristics.

Are a singe part of a chromosome that produces a single effect on the body.

A set of matching chromosomes is inherited from each parent.  Therefore each person has two sets of genes inherited.  Genes occupying the same position on the chromosome affect the same characteristic, though they may have a different effect i.e.- Brown and Blue eyes.  A set of genes such as this is called an allele.
 
 

Are strong genes that produce an, effect even when only present as one on the alleles. They mask the presence of a recessive gene.

Are weak genes that do not have an effect when only one of the genes is present as one of the alleles.  They have no effect if they are with a dominant gene.

The process that produces new and different genes by altering the DNA.  It is a change in the bases of the DNA.