FRHD 2270 Study Guide - Midterm Guide: Sickle-Cell Disease, Junk Food, Childhood Obesity

• School: University of Guelph
• Department: Family Relations and Human Development
• Course: FRHD 2270
• Professor: Robyn Pitman

Document Summary

Week 2: genetics, growth, and health (chapters 2 & 4) Genotype produces your phenotype: complete set of gene"s, person"s heredity. Dominant genes chemical instructions are followed: expressed, can be seen in both homo and heterozygous. Phenotype observable traits and characteristics: height, weight, eye color, hair color, genetic instructions with environmental influences. Recessive genes if paired with a dominant gene, will not be expressed: only expressed when alleles are homozygous (same) Play a role in whether or not you will inherent an abnormality. Incomplete dominance dominant gene is not fully expressed (fetal alcohol syndrome, sca) Two separate fertilized eggs by two separate sperm. Dominant rare because they often do not live long enough to reproduce. Sex linked the gene causing the disorder is carried on one of the sex chromosomes. Down syndrome caused by an extra 21st chromosome (autosome), which causes cognitive deficits and developmental delays. Woman in 20"s 1 in 1000, woman in 40"s 1 in 50.