There are approximately 25,000 genes contained on the 46 chromosomes in each cell of the human body. This means that one chromosome contains thousands of genes. A person can have normal chromosomes in number and structure, but still have a disease or condition caused by a mutation in one or more of the genes on the chromosomes. A single gene defect usually does not cause the chromosome structure or number to be abnormal. Similarly, a person can have normal genes; however, if the person has extra copies of genes due to a chromosome abnormality, then those extra copies can cause the genes to not work properly.
Microscopic anatomy is the answer
The elbow is less sensitive than the fingertips because it contains less sensory neurons. The more sensory neurons the more signals it sends to your brain which causes sensitivity.
C is da answer.................
This process is called osmosis
