Practice Questions

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#Question id: 13105

With the help of DNA fingerprinting which can be used to determine paternity. There are three babies (Baby A, Baby B and Baby C) in a maternity ward, and three sets of confused and worried parents. (Father and Mother #1 are a couple, as are Father and Mother #2, and Father and Mother #3.)
You do each PCR reaction on chromosome 15 and load each one into a separate well of an agarose gel, and then run the gel.

Given the data so far, for which of the following statement is correct

#Unit 13. Methods in Biology

Baby A is legitimate child of given parents because it has a band @ n=25 and there is only one set of parents that could have given a chromosome 15 with n=25 to their offspring, couple #3
Baby B is legitimate child of given parents because it has a band @ n=25 and there is only one set of parents that could have given a chromosome 15 with n=30 to their offspring, couple #2
Baby C is legitimate child of given parents because it has a band @ n=30 and there is only one set of parents that could have given a chromosome 15 with n=25 to their offspring, couple #1.
Baby A is legitimate child of given parents because it has a band @ n=35 and there is only one set of parents that could have given a chromosome 15 with n=35 to their offspring, couple #3.