With chromosome maps called idiograms, researchers can pinpoint the locations of genes and locate abnormal gene forms. Aa Aa Aa Most cytogeneticists are skilled at identifying individual ...

A chromosome is a single, long molecule of DNA. These highly organized structures store genetic information in living organisms. Small sections of the chromosome, called genes, code for the RNA ...

Sex determination at birth is decided on the chromosomes the baby has. A female has two X chromosomes, whereas a male has one ...

How do sex chromosomes affect intelligence? Created with Sketch. The X chromosome carries at least 150 genes linked to intelligence. Since the mother has two X chromosomes to pass along while the ...

Genes are the basic units of inheritance in nature. This article is the first in a four-part series exploring the role of genes and chromosomes in inheritance, health and disease.

Now nonchromosomal genes have been identified by the traditional methods of genetic analysis There has been evidence for many years that hereditary information exists apart from the chromosomal genes.

The nucleus of each human body cell contains 46 chromosomes. Each chromosome contains about 1000 genes. There is enough DNA in all the cells in a human body to stretch to the sun and back again ...

This video segment from NOVA: "Judgment Day: Intelligent Design on Trial" reveals how genetic evidence helped ... it explains that humans have one fewer chromosome pair in their cells than apes ...

All men and only men have a Y chromosome. This biological fact allows us to trace back in time a direct, largely unchanged genetic line of inheritance from father to son. Every person, male or ...

There are two types of hemiplegic migraine. They share the same symptoms and are both caused by gene mutations. If you have one parent with familial hemiplegic migraine, you have a 50 percent of ...

The cell's nucleus contains chromosomes. These are long threads of DNA, which are made up of many genes. Humans have around 25,000 genes across their 23 pairs of chromosomes.