DNA, RNA, Chromosomes, and Genes

Genetics and the Human Genome

What is meant by genetic determinism?

Genetic determinism is a theory proposing that behavior and character are entirely shaped by genes. Since only genetic material passes from one generation to the next, it seemed logical at one time to assume that all of our traits (physical, behavioral, psychological) were the result of gene sequences. More recent and extensive research has demonstrated the importance of environmental factors in determining how or which genes are actually involved in the development of the individual.

The normal human karyotype contains twenty-three chromosome pairs, including either an XX pair for women or an XY pair for men.


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