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The scientific name of fruit flies |
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Why do scientists use Drosophila Melanogaster? |
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1.few weeks between generations 2.small and easy to maintain in lab 3.8 chrromosomes 4.no one cares when disposed of |
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What'd Thomas Hunt Morgan do? |
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Discovered sex chromosomes-XX and XY |
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Sex determining Region Y-located on "Y" chromosome |
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What creates Testes and ovaries? |
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Definition
Code on proteins of the SRY gene creates testes none on X,it becomes ovaries |
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Any substance that disrupts normal DNA formation |
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What are the 2 ways to detect genetic diseases? |
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Definition
1.amniocentesis 2.chronic villi sampling |
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Remove some fluid from the amniotic sac,analyze cells in fluid |
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Cells that grow between uterus and placenta |
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1.occur in gamete 2.can be passed on |
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1.occur in original body cell 2.can be passed on |
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Definition
nondisjunctionof entire sets of chromosomes |
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