HLTC23H3 Lecture Notes - Lecture 4: List Of Black Mirror Episodes, Cardiovascular Disease, Lean Body Mass
Document Summary
Variations in human growth and development (height and physiological growth) Humans - 99. 9 % identical dna sequence level difference amongst them. Genotype: dna sequence level comparison, adenine-cytosine-guanine-thymine pairs and their order and such. Phenotype: physical manifestation of genotype, appearance = expression of genes, but also of environment. In humans, a lot of phenotypic difference based on very little genotypic difference. Therefore, environment has a pretty big effect. Ex. place with less sunlight = lighter skin to absorb more nutrients from sun. Rules: warmer climates = thinner, taller proportions because better adapted to sweat (more surface area) and less fat to keep you hot, colder climates = stockier, shorter because body fat to keep warm. Comparative growth: skeletal measures (height, proportions) Graph can be stretched horizontally/vertically = the plasticity of height. Bogin: easy to attribute to genetics, but clearly more factors affect it than that total height sitting height = leg length grow fastest during childhood.
