Genetics Flashcards
1
Q
Chorionic villus biopsy at how many weeks?
A
11.5 weeks
2
Q
USS booking scan at ? weeks
A
10-12
3
Q
detailed USS at ? weeks
A
20
4
Q
USS to detect microcephaly or short limbs, after ? weeks
A
22
5
Q
USS can detect cardiac anomalies between ? and ? weeks
A
12 - 20
6
Q
amniocentesis at ? weeks
A
16
7
Q
when is QF-PCR (quantitative fluorescent PCR) useful?
A
detection of additional chromosomes i.e. Downs syndrome
8
Q
what can free foetal DNA in maternal circulation be used to test for
A
sex determination
trisomy
9
Q
what chromosome abnormality does aCGH detect?
A
imbalance
