Biology Lecture E2 10.5

Biology Lecture E2 10.5 - Biology Lecture 10/05/10...

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Biology Lecture 10/05/10 Mendelian Genetics Chromosomes are like pairs of books – you get one volume of 23 from mom, another volume of 23 from dad Each has the same set of hereditary instructions (for hair color, eye color, etc.) Sex chromosomes o Females have set of chromosomes that are “XX” – which are homologous (so: a total of 23 pairs of homologous chromosomes) o Males are “XY” (so: only 22 pairs of homologous chromosomes) Mitosis o Somatic cells o Daughter cells identical to parent cells o No genetic recombination Meiosis o Reproductive cells o Daughter cells have half of the chromosomes of the parent o Genetic recombination o Result: sperm and egg Somatic cells – “body” cells; and cell that is not an egg or sperm cell o Undergo mitosis Gametes – reproductive cells (sperm and egg) Diploid – o A cell having the full complement of paired chromosomes (in humans = 46 chromosomes; abbreviated as “2n”) o Ex. Somatic cells
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Haploid –
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This note was uploaded on 02/08/2011 for the course BIO 101 taught by Professor Cantwell during the Fall '08 term at University of Tennessee.

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Biology Lecture E2 10.5 - Biology Lecture 10/05/10...

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