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Sex and Death: Too Much of a Good Thing
Sex and Death: Too Much of a Good Thing
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Sex and Death: Too Much of a Good Thing
Genetic imbalances—such as those associated with Down syndrome in humans—are generally harmful. The number of copies of a given gene, the gene dose, can be very important. In the roundworm C. elegans, sex (male or hermaphrodite) is determined by the number of X chromosomes. Dr. Barbara Meyer explains how hermaphrodites control gene expression on their pair of X chromosomes to avoid having double the gene dose of males. By studying these sophisticated genetic systems in worms, scientists can learn more about related molecular pathways in mammals and humans. From the Series:HHMI’s Understanding Biomedical Research Series
Channel: ResearchChannel
Category: Science
Video Length: 3435
Date Found: February 12, 2009
Date Produced: November 30, 2001
View Count: 20
 
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