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January 12, 2011

January 12, 2011. Warmup :. Fill in table comparing mitosis and meiosis On back, draw picture and write a short description for the following phases Prophase I Telophase I Telophase II What is the result of each of these phases? What important events occur in each?. Chromosomes.

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January 12, 2011

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  1. January 12, 2011

  2. Warmup: • Fill in table comparing mitosis and meiosis • On back, draw picture and write a short description for the following phases • Prophase I • Telophase I • Telophase II What is the result of each of these phases? What important events occur in each?

  3. Chromosomes • Every “normal” person has 46 chromosomes • Or 23 pair of chromosomes • 23 from each parent

  4. Chromosomes cont… • So that when you look at one person’s entire Karyotype (chromosomes) they have 46 total.

  5. Genetics and chromosomes • Chromosomes are what carry the alleles in DNA • Each chromosome has an allele on it, and a matching one on its homologous pair. • This is why we have two alleles for every trait • This is why this person’s alleles are Aa for a certain trait. And the dominant trait (A) will be expressed

  6. Sex-linked traits • Of the twenty three pairs of chromosomes, 22 of them are the same whether you are male or female. (autosomes) • The 23rd pair is known as the sex chromosomes

  7. For Woman they have XX For men, it is XY Sex Chromosomes…

  8. Blood Types

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