PSYC 2P12 Lecture Notes - Lecture 2: In Vitro Fertilisation, Genomic Imprinting, Chromosome Abnormality

• School: Brock University
• Department: Psychology
• Course: PSYC 2P12
• Professor: Kerri Michalica

Document Summary

Genotype: genetic make up of an individual. Phenotype: observable characteristics of an individual. Chromosomes: store and transmit genetic information. Genes: segments of dna located along the chromosomes. Dna: substance of which genes and chromosomes are made. The 22 pairs of chromosomes that are not sex chromosomes. Two forms of the same gene: appear at the same place on both chromosomes in a pair, one inherited from each parent, homozygous, heterozygous. Incomplete dominance: both alleles of a single gene are expressed, results in. Combined trait or intermediate between the two. Polygenic inheritance: many genes combine to influence a trait. Imprinting: che(cid:373)ical (cid:373)arker that activates either father"s or (cid:373)other"s ge(cid:374)e, often temporary. Mutation: sudden, permanent change in a dna segment. Down syndrome: problems with the 21st chromosome. Sex chromosome abnormalities: problems with the x or y chromosomes. Helps couples: assess chances of hereditary disorders, choose best course of action.