Question

Question 14 4 pts Examine Figure 10. Sue and Rob just had a baby, but the hospital mixed up the tags in the neonatal unit. In order to determine which child (A, B, C or D) belongs to Sue and Rob, the hospital collects DNA samples and does an STR analysis at a single STR site. Which child or children could be Rob and Sue's? OA OB oc O D&B O B&C

Answer 1

Every child receives half of its genome from the mother and other half of the genome from the father. So the child which will show bands in common with the mother as well as with the father will be the child of that couple.

First child is having only one band in common with the mother.

Second child is having only one band in common with both mother and father.

Third child is is having two bands in common with the father and mother both.

Fourth child is having a band in common with the father.

Second child will also be the child of this couple because it is sharing one band which is present in both mother and father.

So third child will be the child of the couple because it is showing two bands in common with the mother and father.

Answer is B and C

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