The DNA fingerprinting technique and development and comparison of physical fingerprints can be the methods used for the purpose of solving crimes and identification of missing person.
The DNA fingerprinting can be done from the physical evidences such as blood, sweat, hair, tissues, teeth and other material obtain at crime scene. These can be compared with the suspects, victim and missing persons so as to establish their identity.
The physical fingerprints can be developed on the scene of crime and compared with the requested specimen from suspect, victim and the missing person or in case of impersonation to establish the desired identity.
In an experiment, there are usually two groups that are taken and one is compared to another.
One group is the experimental group and the other group is the control group.
An experimental group is the one that receives the test sample or undergoes the experimental procedure and thus, the independent variable that is being tested for is changed for this group.
A control group is the one that does not undergo any experimental testing and hence, the independent variable is kept constant for this group.
Based on the above information it can be concluded that in the given experiment the rats that receiving leptin are the experimental group whereas those that do not receive anything are the control group.
Photosynthesis is the process of trapping the energy of glucose. Cellular respiration is the process of releasing the energy stored in the bonds of the cell.
The cornea is one of the most sensitive tissues of the body, as it is densely innervated with sensory nerve fibres via the ophthalmic division of the trigeminal nerve by way of 70–80 long ciliary nerves. Hence the answer would be option D.
