PSYC 2450 Chapter Notes - Chapter 3: Egg Cell, Zygosity, Zygote

• School: University of Guelph
• Department: Psychology
• Course: PSYC 2450
• Professor: Heidi Bailey

Document Summary

Genes: hereditary blueprints for development that are transmitted unchanged from generation to generation. Conception: the moment of fertilization, when a sperm penetrates an ovum, forming a zygote. Mitosis: the process in which a cell duplicates its chromosomes and then divides into two genetically identical daughter cells. Meiosis: the process in which a germ cell divides, producing gametes (sperm or ova) that each contain half of the parent cell"s original complement of chromosomes. Allele: alternate forms of a gene that can appear at a particular site on a chromosome. Single gene inheritance patterns: simple dominant-recessive inheritance: a pattern of inheritance in which one allele dominates another so that only its phenotype is expressed. Homozygous: having inherited two alleles for an attribute that are identical in their effects (aa homozygous dominant or aa homozygous recessive) Colour-blindness results due to recessive gene on x chromosome, males are more likely to be colour-blind since they only have one x chromosome.