HDF 200 Lecture Notes - Lecture 5: Ovulation, Fetus, Phenylalanine
12 Oct 2016
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Hdf 200 - lecture 5 - pregnancy/prenatal development. Genes - storage of the genetic structure of an individual. Create a plan for development across the lifespan. Chromosomes - rod-shaped portions of dna (feldman, 2015, p. 41) Cells consist of 46 chromosomes that are organized in 23 pairs. Sex is determined by the 23rd pair. Mitosis - the process of cell replication. Every cell has 23 pairs of chromosomes. Gametes - male and female reproductive cells sperm and eggs. If there is at least one dominant trait, that is the one which is expressed. If all the traits are recessive, that trait is expressed. Imprinting - when a gene from the mother or father is not expressed. Polygenic inheritance - multiple genes combined to create one particular trait. Alleles - genes governing traits that may take alternate forms (feldman, 2015, p. 43) Gene x environment interaction - interaction between dna and the environment. Development has a relationship between heredity and the environment.
