A person who has one recessive allele for a trait and one dominant allele. They do not have the trait, but can pass on the trait to their offspring.

Some traits are controlled by many genes that can be found on two or more chromosomes.

Genes for some human traits are carried on the sex chromosomes. Traits controlled by these genes are called sex-linked traits.

Are one of the 23 pairs of chromosomes in each body cell. They carry genes that determine whether a person is male or female.

If you are a ___?___, the two sex chromosomes match (XX). If you are a ___?___, the two sex chromosomes are different (XY).

An abnormal condition that a person inherits through genes or chromosomes.

A picture of all the chromosomes in a cell. The chromosomes are arranged in pairs and can tell if a person has the correct number of chromosomes in his or her cells.

A chart or “family tree” that tracks which members of a family have a particular trait.

The process of selecting organisms with desired traits to be parents of the next generation.

A DNA technology that takes nuclear DNA from a person’s cells, breaks it into small pieces or fragments and uses it to identify people and show whether people are related.

A technique that involves crossing two individuals that have similar characteristics. These organisms are very similar and have a higher probability of inheriting alleles that lead to genetic disorders.

Is all the DNA in one cell of an organism. The main goal of this project with humans was to identify the DNA sequence of every gene in a human.

When breeders cross two genetically different individuals. This organism that results is bred to have the best traits from both parents.

This process someday will use genetic engineering to correct some genetic disorders in humans.

An organism that has exactly the same genes as the organism from which it was produced. It is an easy process for some plants, but is a difficult process for most animals.

The process where genes from one organism are transferred into the DNA of another organism. It can be used to produce medicines and improve food crops.

*An example of this trait is A, B, AB, or O blood type.

*An example of this is the crossing of Loganberries with blackberries to make a Boysenberry.

*Examples include colorblindness, hemophilia, and male-pattern baldness.

*An example of these traits include height, non-blue eye color, skin color, and hair color.

DNA Technology

Which suspect belongs to the bloodstain?