LIFE SCIENCE

OBJECTIVE LIFE SCIENCE

EVOLUTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Two people believe they are related. Which would be the best technique to determine if they are related?
A
testing blood types
B
examining karyotypes
C
testing for genetic disorders
D
comparing DNA
Explanation: 

Detailed explanation-1: -The other two methods used to analyze DNA evidence are restriction fragment length polymorphism (RFLP) testing and PCR testing on DNA from the mitochondria of the cell.

Detailed explanation-2: -On average, about 99.9 per cent of the DNA between two humans is the same. The remaining percentage is what makes us unique (unless you are an identical twin!). Although this might sound like a small amount, it means that there are around three million base pairs? that are different between two people.

Detailed explanation-3: -DNA profiling is a state-of-the-art procedure that can be used to identify individuals on the basis of their unique genetic makeup. While people may share the same eye and hair color, and may even have similar facial features, they will not have the same DNA.

Detailed explanation-4: -The DNA typing technique I would choose if I had to analyze a DNA sample would be polymerase chain reaction or PCR. PCR is not very expensive, which makes it easier to access, more useful for crime investigation.

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