Heredity and Environment Ch 3 student

Heredity and Environment Ch 3 student - 1 When egg and...

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Heredity and Environment Ch 3 Genetics describe _______________, but environment influences the _______________ Genes 1. Humans have _____ pairs of chromosomes, each of which is organized into small units (__________) for the transmission of heredity. 2. An ______________ is a variation that makes a gene different on some way from other genes for the same characteristics. 3. ______________ - the entire packet for every species and variety of plant, animal, bacteria, and virus. The human genome is _____% identical for any two people. Beginnings of Life Twins Assisted Reproduction Growing from 1 Cell to Many
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Unformatted text preview: 1. When egg and sperm merge, they create a zygote that has a _______________ . This genotype is manifested as a _______________ 2. Epigenetics …. Additive Heredity … Dominant-Recessive Heredity … Heritability – what _______________ of_____________ in a particular trait within a particular population in a particular context and era can be traced to genes. Chromosomal Problems a. Down Syndrome … b. Odd number of sex chromosomes … Gene Disorders c. Dominant gene disorders are rare because … d. Recessive disorders – many are sex linked Genetic Testing –...
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