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Carlos Battistini

Multiple Alleles

Three or more forms of a gene that code for a single trait.

Sex Chromosomes

One of the 23 pairs of chromosomes in each body cell.

Sex-Linked Gene

Y chromosomes are often called this because their alleles are passed from parent to child on a sex chromosome.

Carrier

A person who has one recessive allele for a trait and one dominant allele.

Genetic Disorder

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

Pedigree

A chart or "family tree" that tracks which member of a family have a particular trait.

Karyotype

A picture of all the chromosomes in a cell.

Selective Breeding

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

Inbreeding

This technique involves crossing two individuals that have similar characteristics.

Hybridization

In this, breeders cross two genetically different individuals.

Clone

An organism that has exactly the same genes as the organism from which it was produced.

Genetic Engineering

In this process, genes from organism are transferred into the DNA of another organism.

Gene Therapy

This process will involve inserting copies of a gene directly into a parent's cells.

Genome

All the DNA in one cell of an organism.

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