ANTA01H3 Chapter Notes - Chapter 3: Standard Deviation, Population Bottleneck, Mutation
Document Summary
Genetics: the genes structure/pattern of transmission traits from parent to offspring there are basically two types of cells somatic and gametes. Somatic cells: cellular components of body tissue, muscle, bone, skin, nerves, heart and brain. Gamete: sex cells involved in reproduction (egg cells and sperm) Dna molecule is composed of 2 smaller chains called nucleotides; sugar, phosphate, 4 bases. Bases are adenine, guanine, thymine, cytosine [a-t, g-c) Regulatory gene: play an important role in evolution genes that code for the productions of proteins that can influence the action of other genes. Chromosome: discrete structures composed of dna and protein found only in the nuclei of cells. In humans there are 46 chromosomes, 23 pairs. There are 2 types of chromosome, autosome (carry genetic info all physical characteristic except sex) sex chromosome (xy male, xx females) 22 pairs of autosome and 1 pair of sex chromosome. Meiosis occurs in all sexually reproducing organism.
