Chapter 13

Instructions

Choose your answers from a-d by clicking the radio button next to each choice and then press 'Submit' to get your score.

Question 1

Which of the following is a feature of X-linked dominant inheritance?

a) Parental consanguinity

b) Male to male transmission

c) Transmission only by females

d) Transmitted by males only to females

Question 2

Which of the following karyotypes is diagnostic of Down syndrome

a) 46,XX,der(14;21)(q10;q10)pat+21

b) 47,XY,+13

c) 45,XX,rob,(14;21)(q10;q10)

d) 46,XY,t(2;3)(q21;q12)

Question 3

The presence of an extra digit is referred to as __________.

a) arachnodactyly

b) brachydactyly

c) clinodactyly

d) polydactyly

Question 4

Asp235Phe in a molecular report indicates that:

a) asparagine has been replaced by phenylalanine.

b) phenylalanine has been replaced by asparagine.

c) aspartic acid has been replaced by phenylalanine.

d) phenylalanine has been replaced by aspartic acid.

Question 5

If both parents are affected with the same autosomal recessive disorder then the probability that each of their children will be affected equals ___.

a) 1 in 4

b) 1 in 2

c) 2 in 3

d) 1

Oxford University Press, Online Resource Centre, Chapter 13.

Chapter 13

Instructions

Question 1

Question 2

Question 3

Question 4

Question 5