Psychology 1000 Chapter Notes - Chapter 4: Molecular Cloning, Human Cloning, Twin Study

• School: Western University
• Department: Psychology
• Course: Psychology 1000
• Professor: Laura Fazakas- De Hoog

Document Summary

100 trillion in the body (except red blood cells) Nucleus: each contains 456 chromosomes arranged in 23 pairs (1 of each pair from each parent) Chromosome: contain numerous genes in 2 long twisted strands. Genes: segments of dna that have instructions to make protein (building blocks of life) Individual"s specific genetic makeup: present at birth and never changes. Phenotype: observable characteristics produced by genes, affected by genes and by the environment. If the gene received by both parents is dominant, the trait will be expressed. If the genes is recessive, the trait will not be expressed unless the paired gene from the other parent is also recessive: ex: brown eyes and dark hair are dominant over blue eyes and blonde hair. Polygenic transmission: numerous genes combine to determine a trait. Identify whether a person has the specific genes that will result in certain diseases: provide medical counseling and support. Splice and combine dna from 2 different organisms.