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Abnormal chromosomes

Which is a result of nondisjunction?
Aneuploidy
Polyploidy
What is a polyploidy?
Adding or missing one chromosome
Extra sex of chromosomes
Removal of chromosomal segment
What is nondisjunction?
During meiosis 1 or 2 when both sets of chromosomes are pulled to one side.
Chromosomes doubling but not replicat
Repeats of chromosomal segment
Y linked disease
What is endoreduplication?
Cell don't replicate but divide
Cells replicate but don't divide (mitosis)
Cell oocyts arrest here
What is autopolyploid?
Complex of DNA and chromosomal protein
DNA wraps around this
Arises from one spieces through endoreduplication
Aries from multiple speices
What is allopolyploid?
Arises from one species
Arises from multiple species through hybridization and endoreduplication
Nitrogenous bases
Nondisjunction
What chromosome can a Robertsonian Transocation only happen to?
Aricentric
Arocentric
What is Robersonain Translocation?
A mutatin of the FMR1 gene
X linked recessive trait
P arms break off and Q arms fuse together
Reverses a segment within a chromosome
How can you tell if a gene is a fragile X site?
CGG triplet repeats
UGG triplet repeats
Mutation of FMR3 gene
Deletion is a removal of chromosomal segment and can be reversed
True
False
Duplication is a repeat of chromosomal segment
True
False
Inversion is a revers of a segment within a chromosome
True
False
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