okay try this one - saonew

[ArchivalUser]

The average recurrence risk for a couple that has had a child with cleft lip, a
multifactorial birth defect, is approximately 4%. What is the recurrence risk if
the couple has two affected children (neither parent having cleft lip)?
A. 2%
B. 3%
C. 4%
D. 10%
E. 50%

[ArchivalUser]

CC??

[ArchivalUser]

multivit, we have the same reflex(I picked C too) but it is not the given answer

[ArchivalUser]

ddd

[ArchivalUser]

fido you have done the step1 right?

[ArchivalUser]

yes sao....just logged on and gave ur q a try...)

[ArchivalUser]

very nice, I wish you good luck for step2 you are the best

D. When looking at the inheritance of multifactorial traits, as the number of
affected children within a single family increases, the recurrence risk also increases.
Although these risks can only be determined from empiric data, we know that it must be
greater than 4% yet less than 50%, since there is no evidence here of autosomal dominant
transmission.

[ArchivalUser]

good luck to you sao...i have learnt a lot from ur questions...thank you very much