'Haploid sperm' presentation slideshows

HIV and AIDS

HIV and AIDS. Virus: non-living particles of DNA (or RNA) and protein Needs a cell to reproduce. Bacteria: single-celled organisms that lack a nucleus (aka prokaryotes). Antibiotics : Chemicals that block the growth of bacteria ; they have no effect on viruses . Mutations :

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Mendelian Genetics in Populations: Selection and Mutation as Mechanisms of Evolution

Mendelian Genetics in Populations: Selection and Mutation as Mechanisms of Evolution. Motivation Can natural selection change allele frequencies and if so, how quickly???. With the neo Darwinian synthesis: Evolution = change of allele frequencies.

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Chromosomes: the cellular basis of the instructions Mitosis - Meiosis

Chromosomes: the cellular basis of the instructions Mitosis - Meiosis. Diploid organism : two sets of chromosomes ( one from each parent) 2n Haploid organism : one set of chromosomes n. Germ cells : the cells that provide the continuity of life from generation to the next.

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CHAPTER 13 MEIOSIS AND SEXUAL LIFE CYCLES

CHAPTER 13 MEIOSIS AND SEXUAL LIFE CYCLES. Heredity- the transmission of traits from one generation to the next, also called inheritance . Variation- the differences that offspring have from their parents and siblings. Genetics- t he study of heredity and variation. Introduction.

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Behavior, Eusociality , a nd Kin Selection

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Meiosis

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Warm Up

Warm Up. Locate your notes on mutations Be prepared to share what you learned about mutations with the class. . Meiosis Part I. Monday; March 19, 2012. Essential Questions. How can mitosis and meiosis each contribute to the production of offspring with varying traits?

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