Chromosomes And Recombination
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Mccabe lecture on chromosomes and recombination
- 1.Indications for ordering a chromosome analysis include:
- A.
Growth and development abnormalities
- B.
Family history of chromosomal abnormalities
- C.
Infertility, still births, or neonatals death
- D.
Pregnancy with advanced maternal age
- E.
All of the above
- 2.__________ is any chromosome number other than 46
- 3.Triploidy is most often due to ________________
- 4.A complete mole is:
- A.
Diploid and has chromosomes all from paternal origin
- B.
Has a small atrophic fetus
- C.
Contains no fetus or placenta
- D.
Has an extra paternal chromosome set
- E.
A and C only
- 5.Tetraploidy is always __________ or ____________
- 6.Aneuploidies are due to ___________________
- 7.If there are one or more crossovers, then the ratio of non-recombinant: recombinant genotypes will be:
- A.
1:2
- B.
2:1
- C.
1:1
- D.
1:3
- E.
Unknown
- 8.Genetic linkage analysis is based on:
- A.
PCR and computer analysis
- B.
Probability of meiotic recombination events
- C.
Physical map of the DNA making up the chromosome
- D.
Number of people in a population
- E.
Patchwork inheritance pattern of DNA
- 9.FISH :
- A.
Detects a specific positions on a chromosome
- B.
Paints whole chromosomes
- C.
Stands for fluorescence in situ hybridization
- D.
A and C
- E.
B and C
- 10.Possible manifestations of Down Syndrome are
- A.
Transverse palmar crease and flat wide bridge of nose
- B.
Microcephaly, and protruding tongue
- C.
Acute lympocytic leukemia
- D.
A, B, and C
- E.
A and C only
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