Genetics Overview

A New Scientific Frontier
GeneticsIn the summer of 2000, government and private sector scientists joined together to make a historic announcement — they had completed a map of the 30,000 to 50,000 genes that comprise the human genome.

By mapping the human genome, we are moving toward a powerful new understanding of human health. Scientists strongly believe the achievement will turn out to be one of the greatest contributions to science in the 21st century.

This new emphasis on genetics is transforming the way we approach medicine. Defining the human genome will give us the ability to identify, treat, and ultimately prevent diseases in ways never before imagined. During this century, we will be able to develop new therapies for diseases that have plagued humans for generations, from cancer to heart disease, from Alzheimer disease to diabetes.

Genetics and Autism
During the past decade, scientists have made significant breakthroughs in understanding the genetics of autism. Researchers are now focusing on specific chromosomal regions that may contain autism-related genes. This has been accomplished by studying chromosomal abnormalities in individuals with autism, and by screening each chromosome for evidence of genes associated wth autism.

Recent Investigations of Chromosomal Regions and Candidate Genes
Although suggestive evidence for the existence of autism-related genes has been found for several chromosomal regions, researchers are currently focusing on five different chromosomes: 2, 3, 7, 15 and X.

 

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WHAT IS A GENE?
Genes are very small structures inside almost every cell of the body. They are the instructions, or blueprints, that tell our body how to grow and develop, build necessary proteins, and thus determine an individual's characteristics, such as eye color and blood type. More ...

HOW GENES ARE NAMED
You may wonder how genes are named. As you may have guessed, some names are abbreviations for the full gene names. Other genes are named after similar genes in other organisms. More ...

WHAT IS A CHROMOSOME?
Chromosomes are structures that contain genes. Chromosomes are visible with a microscope and are located in the nucleus of a cell. Almost every human chromosome contains thousands of individuals genes. More ...

HOW CHROMOSOME ABNORMALITIES HELP US FIND GENES
Genetic researchers use many different tools and strategies to look at the genetic material (DNA) inside our cells to find the exact gene(s) that cause a genetic disorder such as autism. More ...

HOW GENOME SCREENS HELP US FIND GENES
In order to determine the genes that may be involved, scientists also perform what are referred to as "genome screens." To do this they use maps of the chromosomes in order to look for genes. More ...

 
   

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