Question

The DNA fingerprinting analysis of four family members is shown below.
Study the band pattern obtained and assign each family members to $W,X,Y$ and $Z$. Choose the correct option.

• A. $W-father,X-mother,Y-child,Z-paternaluncle$
• B. $W-child,X-father,Y-mother,Z-maternaluncle$
• C. $W-father,X-child,Y-mother,Z-paternaluncle$
• D. $W-child,X-father,Y-maternaluncle,Z-mother$

Answer 1

Answer: (C)

$W-father,X-child,Y-mother,Z-paternaluncle$

Half of the band pattern of X resembles W while other half resembles with Y. Hence, Y and W are parents of X.

Also, Z and W have half of their DNA bands in a similar pattern which means that they are most likely siblings. That makes Z, paternal uncle of X assuming that W is the father.

So, the correct option is 'W−father, X−child, Y−mother, Z−paternal uncle'.