Human Development notes 4

Human Development notes 4 - Biologicaland...

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Click to edit Master subtitle style  2/10/11 Biological and  Environmental Foundations
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 2/10/11 Genetic Foundations Genome Complete set of DNA for an individual Building blocks of life. Blueprint for development. Chromosomes Within the ____nucleus_____________ of a cell. Made up of ribbons of DNA and protein. We have 46 chromosomes
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 2/10/11 Genetic Foundations DNA Deoxyribonucleic acid Matched base pairs specify genetic info. A:T G:C Mitosis Chromosomes divide and duplicate. Cell division Genes
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 2/10/11 Sex Cells Gametes Sex cells Ova and sperm Formed through meiosis and results in one pair of 23 chromosomes. Zygote During conception, the sperm and ovum unite and creates the zygote (with 46 chromosomes).
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 2/10/11 Chromosomes Karotype Picture of chromosomes used to align the pairs together. Autosomes 22 matching chromosome pairs.
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 2/10/11 Boy or Girl? Sex chromosomes 23rd pair Female: XX Male: XY
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Multiple Births Twins Dizygotic twins (fraternal) Two zygotes or fertilized ova. Most common. Monosygotic twins (identical) One zygote that divides into two. Same genetic makeup. Twins are often born early. Higher number of twins with in
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This note was uploaded on 02/08/2011 for the course DFST 1013 taught by Professor Fields-moore during the Spring '08 term at North Texas.

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Human Development notes 4 - Biologicaland...

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