Health Sciences 2700A/B Chapter Notes - Chapter 2: Nucleosome, Epigenetics, Chromatin
22 Sep 2020
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Lifespan development textbook chapter 2 notes theories of development. 2. 1 describe the structure and function of genes. Both genetic and epigenetic factors interact with environmental variables to shape our level of health and well-being across the lifespan. Epigenetic processes integrate nature and nurture; we"re just beginning to understand this. Evolution is used to explain cognitive and, by extension, social and cultural behaviour. Our body cells" nuclei contain 23 pairs of chromosomes; made up of finely coiled dna molecules: dna base pairs: a, t, c, g, dna is wound around histones (a protein material), called the nucleosomes. Each chromosome contains segments, called genes, each of which influences a particular trait or developmental pattern. A gene controlling a specific characteristic always appears in the same place (the locus) on the same chromosome in every individual of the same species. A genome is all the dna an organism possesses.
