POSC 3210 Lecture Notes - Lecture 3: Zygosity, Phenylalanine, Grey Matter
6 Mar 2019
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Document Summary
Genotype- genetic material a child inherits from their parents. Phenotype- body and behavioral characteristics of a child. Environment- surroundings and aspects of a child other than their genes. Genes create amino acids, which combine to make proteins. How genes and the environment work together in a developing child. 46 chromosomes (23 pairs) two members of each pair are same size and shape. Carries biological instructions involved in formation and functioning of an organism. Genes- basic units of heredity in all living things. Each gene is a segment of dna that is code for particular protein. Sry gene on the y chromosome encodes the protein that triggers the formation of testes and testosterone. Genes guarantee that humans will be similar to one another. Genes also guarantee differences through several mechanisms. Changes in sections of dna caused by random or environmental factors. During gamete division 23 pairs of chromosomes are randomly shuffled.
