PSYC 230 Lecture Notes - Lecture 4: Prenatal Development, In Vitro Fertilisation, Umbilical Cord
16 Jan 2017
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Document Summary
Behavioural genetics is the study of the effects of heredity on behaviour and development. Environmental factors such as taking drugs and smoking can result in a change in the genes. Down syndrome: also referred as mongolism, is the result of an extra chromosome on the 21st pair. Klinefelter"s syndrome: is the result of an extra x chromosome in the male (xy) (xxy) the person would have underdeveloped genitals, extreme height and a large breast. Genetic counselling: it consists in helping people which have inherited disorders. Blood, skin and urine tests are the most helpful in finding out if a person has an inherited disorder. The tests to find out if a foetus is okay: 15% of couples suffer from infertility, which is the inability to conceive after 12 to 18 months of trying. Infertility is can be caused by: the age of the parents, old male may have ineffective sperm, and old women might have damaged ovum.
