PSYB32H3 Chapter Notes -Chorionic Villus Sampling, Chromosome Abnormality, Turner Syndrome
Genotype: the particular set of genes that a person inherits from her parents. No one has the same genotype besides identical twins. The genotype interacts with the environment in complex ways to produce the phenotype. Phenotype: the observable and measurable expression of an individual"s physical and behavioral characteristics. Zygote: results from the union of the male and female gamete and carries the genetic info. Ovum: the egg, woman gamete is the largest human cell. Sperm: the male gamete, the smallest of all human cells. Chromosomes and genes are located inside the nucleus. 23 chromosomes from each of these cells join to make 23 pairs 46 total. Chromosomes: they carry the genetic information that helps direct development. Each reproductive cell contains only 23 single chromosomes instead of the usual 46, because when they join they create one cell composed of 46 during development. The gametes undergo a special form of cell division meiosis where the 23 pairs are halved.