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23 Cards in this Set
- Front
- Back
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Trisomy |
nondisjunction where there is more then one chromosome |
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Monosomy |
nondisjunction where there is less then two chromosome |
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2n+1 |
Trisomy Formula |
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2n-1 |
Monosomy Formula |
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Aneuploid |
Abnormal Chromosome Number |
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Anaphase I Disjunction |
All gametes from that line will be aneuploid |
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Anaphase II |
Half of the gametes from that line will be aneuploid |
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Karyotype |
A method of organizing the chromosomes in a cell in relation to size, number and types. |
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Karyotyping |
Often done when a mother is pregnant |
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Chrionic Villi Sampling |
Removes a small sample of the placenta, usually done in the first 10 to 12 weeks of pregnancy |
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Amniocentesis |
Removes small sample of Amniotic Fluid, usually done in the first 18 weeks of pregnancy |
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Deletions |
Occurs when the fragment is lost during cell division |
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Duplications |
when the fragment is repeated |
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Inversions |
when the fragment is reattached in the reverse orientation |
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Translocation |
when the fragment is added to a non- homologous |
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Silent Mutations |
the altered codon codes for the same amino acid |
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Missense Mutation |
the altered codon codes for a different amino acid |
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Nonsense Mutation |
the altered codon codes for a stop codon |
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Base-Pair Substitution |
the replacement of one nucleotide and it's partner in the complementary DNA strand with another pair of nucleotides |
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Insertion |
an addition of one or more nucleotide bases |
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Deletion |
a loss of one or more nucleotide bases |
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Mutagen |
Chemical or Physical agent that interacts with DNA to cause a mutation. |
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The Ames Test |
commonly used mutagen test, deciphers mutants from non-mutants |
