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Science » Life Sciences » Genes, Evolution

Genetics and Heredity

provides video clips and interactive resources for learning about birth and growth, genetic inheritance, human genetics, inherited characteristics, Mendelian genetics, and molecular mechanisms of DNA. Find lessons on bioengineered foods, birth and growth, cell replication, DNA analysis, DNA and protein synthesis in the cell, gene inheritance, genetic testing, the expression of genetic information, genetic disorders, the process of scientific experimentation, and reproduction. (Teachers' Domain, Multiple Agencies)

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Interesting Fact:

Knowing your family tree can help explain why you look, and even act, the way you do. Your parents passed down to you a combination of your ancestors' genes. Since genes play a critical role in determining appearance, relatives tend to have features in common, and siblings are the most similar-looking, since they share the most genes.
Shown in this image is polydactyly -- extra fingers or sometimes toes -- one symptom of Ellis-van Creveld syndrome.

Genetic drift


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