PSY210H1 Chapter Notes - Chapter 3: In Vitro Fertilisation, Y Chromosome, Blastocyst
Document Summary
The genetic code: gamete - reproductive cell, zygote combination of two gametes (one sperm and one ovum, contains all a person" genes, each cell manufactures certain proteins according to instructions from the dna. Resulting to kids with identical genetic instructions for appearance, traits, vulnerability and etc: dizygotic twins two separate zygotes created by two ova. In vitro fertilization (art method) ovum is removed from the ovary, fertilized in a lab dish and inserted back to the uterus. Intra-cytoplasmic sperm injection sperm inserted directly into each ovum to improve odds of fertilization. Prader-willi syndrome, if it came from the mother it will result to. Chromosomal and genetic problems: older women can have some ova with 22 or 24 chromosomes, sperm diminished in quantity and normality as they age, down syndrome caused by trisomy-21, gene disorder, most single-gene disorders are dominant disorders.
