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27 Cards in this Set
- Front
- Back
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Sex chromoaomes |
Y 78 genes X 1100 genes |
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Heniozygous |
One copy is defective gene to show disorder |
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Red green color blindness |
Color blindness |
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Hemophilia |
Defective clotting protein |
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Duchennes muscular dystrophy |
Defective dystrophin protein |
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Study color blindness |
% chance |
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X in activation |
In any organism with more than one x, x inactivation takes place Happens random |
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Barr body |
Condensed X chromosomes |
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Chromosomal alteration |
Polyploid- extra set of chromosome Aneuploid - extra chromosome nondisjunction |
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Chromosomal alteration |
Polyploid- extra set of chromosome Aneuploid - extra chromosome nondisjunction |
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Duplications and deletions |
Inversions - upside down Translocation - attaches to non homologous chromosome |
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Poliplodid |
Can be induced Triploidy 3n Tetraploid 4n |
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Aneuploid |
Abnormal chromosomes number Non disjunction Fail in meiosis 1 or 2 One gamete 2 if the same type or 0 |
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Diploid +1 |
Trisomal |
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Diploid - 1 |
Monomeome Turners syndromes |
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1-700 |
Down syndrome |
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Kilnefellers xxy |
Make sex organs often startle fem characteristics |
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Jacobs XYY |
Super tall and aggressive |
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Metafemale XXX |
Super tall , infertile |
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Linked genes |
Are more likely to be inherited together |
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The rate of crossover between two genes on a chromosome |
Is directly proportional to the distance between those two genes |
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For a female to inherit a sex linked recessive disorder she must |
Inherit two defective chromosomes one from each parent |
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Circles in pedigree represent |
Females |
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Females have two X chromosomes but only one is active what form is the second X chromosome |
Barr body |
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Monosomy of sex chromosomes in humans is known as |
Turners syndrome |
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A person with 2 X chromosomes and one Y is |
Phenotypically male |
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Trisomy 21 |
Down’s syndrome |
