Which of the following is/are limb abnormalities of embryonic development?
a) complete absence of limbs
b) complete absence of digits
c) both a and b
d) none of these
Approximately………% of the trimester miscarriages is due to a chromosome abnormality in fetus.
a) 10
b) 20
c) 50
d) 80
Which of the following chromosomal abnormality/ies cause/s miscarriages?
a) an extra chromosome
b) a missing chromosome
c) both a and b
d) none of them
Explanation: these abnormalities occur usually in the first of second trimester of pregnancy
Which of the following complication/s is/are associated with chromosomal abnormalities in child?
a) learning difficulties
b) mental retardation
c) birth defects
d) all of these
Chromosome abnormalities involving a missing or extra chromosome are due to
a) inheritance
b) mistake in cell division
c) exposure
d) all of these
Explanation: this error is a random event that can occur in anyone’s pregnancy
Which of the following is/are the genetic cause of miscarriage?
a) alteration of chromosome structure due to translocation
b) change in a single gene on chromosomes
c) change in several genes on chromosomes
d) all of these
Explanation: this can cause specific genetic diseases or birth defects
