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Bio Chapter 12 Notecards
Chromosomal inheritance and Human Genetics
13
Biology
9th Grade
04/28/2011

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