All of the following are true about Down syndrome except for one.
AIncidence of Robertsonian translocation is 1:1000
BMost common cause is trisomy 21
CMosaicism 21 has no association with maternal age
DExtra chromosome is of maternal origin
EIncidence increases with advanced maternal age
Pedigree analysis chart is a tool used for which of the following purposes?
AUsed for growth monitoring
BTo assess side effects during chemotherapy
CTo assess developmental delay in infants
DUsed to see genetic transmission
Which pattern of inheritance of disease is associated with consanguinity?
AAutosomal dominant
BX linked recessive
CAutosomal recessive
DX linked dominant
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