FMLY 1010 Lecture Notes - Lecture 2: Liver Function Tests, Behavioural Genetics, Heredity

• School: University of Manitoba
• Department: Family Social Sciences
• Course: FMLY 1010
• Professor: Sharon Balasko

Document Summary

Each egg and sperm cell contains 23 chromosomes)thread like structures in the nucleus that contain genetic material. First 22 pairs of chromosomes called autosomes, 23rd chromosome is sex gene so knkow as the sex chromosome. Each chromosome contains one molecule of deoxyribonucleic acid (dna) Four chemical compounds consist of adenine, thymine, guanine and cytosine-make up the double helix with strands of phosphates and sugars. Gene-group of compounds that provide a specific set of biochemical instructions. Incomplete dominance-an allel does not dominate another completely. Sickle-cell trait- when incomplete dominance occurs for genes that control red blood cells, they can be very short of oxygen. Genetics can have a problem one of two ways. Inherited disorder- example of sickle-cell disease or phenylketonuria(pku) when babies are lacking an important liver enzyme. More or fewer chromosomes-downs syndrome in children with an extra chromosome. Behavioural genetics-branch of genetics that deals with inheritance of behavioural and psychological traits.