bicd 100 - lecture 6

bicd 100 - lecture 6 - LECTURE - 6 1. Gamete Formation 2....

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Unformatted text preview: LECTURE - 6 1. Gamete Formation 2. Aneuploidy For discussion in sections.. Please look over this figure and the appropriate section in chapter 2 of the text. What similarities and differences do you see when you compare sperm and egg formation in humans with what happens during gamete formation in the plant shown in this figure? Changes in the number of chromosomes as compared to the wild type • Aneuploidy:. Usually an increase or decrease of one chromosome. eg. trisomy 21 causes primary Down syndrome. (2n+1) • Polyploidy: Having more than two haploid sets of chromosomes (3n, 4n, etc. common in plants). Aneuploidy is caused by nondisjunction Down Syndrome Familial Down Syndrome ...
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This note was uploaded on 01/25/2011 for the course BICD 100 taught by Professor Nehring during the Spring '08 term at UCSD.

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