FRHD 1010 Chapter Notes - Chapter 2: Blood Vessel, Neural Tube, Ace Inhibitor
25 Dec 2017
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Chapter 2: from conception to birth page #50-89: The beginning of life: every person starts life as a single cell, called a zygote, zygote - a single cell that is formed from the fusing of two gametes, a sperm and an ovum. Other species have more or fewer chromosomes: chromosomes contain units of instructions called genes, with each gene located on a particular chromosome, gene a small section of a chromosome; the basic unit for the transmission of heredity. A gene consists of a string of chemicals that provide instructions for the cell to manufacture certain proteins: additional dna and rna (another molecule) surrounds each gene. Xx zygotes become females: xy a 23rd chromosome pair that consists of an x-shaped chromosome from the mother and a y-shaped chromosome from the father. Genetic interactions: additive genes a gene that adds something to some aspect of the phenotype.
