PSY BEH 101D Lecture Notes - Lecture 3: Human Genome Project, Y Chromosome, Egg Cell
15 Jul 2018
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Li(cid:265)espan chapter (cid:411): shared and diver(cid:266)ent (cid:266)enes (cid:452)part (cid:412)(cid:453) Entire packet of instructions that make a living organism is called the genome. Any two men or women, of whatever ethnicity, share 99. 5 percent of their genetic codes. Chimpanzees are 98 percent the same (although chimp genes are on 48, not 46, chromosomes) The genomes for every other mammal are at least 90 percent the same as for people. In females, the 23rd pair is composed of two large. In males, 23rd pair has one large x-shaped chromosome. X-shaped chromosomes: xx with many genes and one quite small chromosome. Because a male"s 23rd pair is xy, when his 46. With only a few genes, which is y-shaped: xy chromosomes divide to make gametes, half of his sperm carry an x chromosome and half carry a y. Y chromosome has a gene (sry) that directs the developing fetus to make male organs.
