Answer:
46 chromosomes
Explanation:
Humans are diploid organisms i.e. they contain two sets of chromosomes (each set from each parent). Each set is 23 chromosomes, hence, two sets will be 23 pairs or 46 chromosomes. This means that each somatic/body cell will contain 46 individual chromosomes.
According to this question, DNA was extracted from a cheek cell. If one could magnify the extracted material, there would be 46 individual chromosomes from each of these cheek cells, considering that cheek cell is a somatic cell.
This pattern can be explained by the principle of natural selection. Natural selection. Natural selection is one of the basic mechanisms of evolution, along with mutation, migration and genetic drift. In natural selection those variations in the Genotype that increase the organisms chances of survival and procreation are preserved and multiplied from generation to generation at the expense of less advantageous ones.
Correct answer: Always parasitic, contains DNA and RNA, cannot reproduce on their own
A virus is a small microscopic parasite that cannot reproduce on their own, it can only replicate them self by hijacking the host machinery. Most of the viruses contain either DNA or RNA as the genetic material.
There are many viruses that are known to cause diseases to the human, one of the common virus is an influenza virus that causes flu. other example includes Ebola, Hepatitis, Polio virus
1) biological evolution
if the genes changes keeps increasing means its going through evolution
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