Answer:
multiple copies of the DNA sample are made.
Explanation:
<em>In PCR, multiple copies of the DNA sample are made.</em>
<u>PCR refers to polymerase chain reaction. It is a process that is used in molecular biology to amplify a certain section of a gene or DNA sample so as to study it in details. The process involves making of several copies of small amount of DNA through thermal cycling.</u>
<em>PCR does not determine the sequence of genes and neither does it destroy DNA.</em>
Answer:
b. Mutualistic
Explanation:
The symbiotic relationships are defined by the interacition between two species, In the mutualistic symbiotic relationship both of the organisms get benefits from the interaction. in the case of the normal flora in the skin as they compete with pathogens for space and food they prevent this patogens to go in the human skin, and they get food from the skin, so as they give protecttion and obtain food, both of the organisms are getting benefits and because of this:
The relationship between you and your normal flora is an example of a mutualistic symbiotic relationship.
Answer:
A mutation is a change in DNA, the hereditary material of life. An organism's DNA affects how it looks, how it behaves, and its physiology. So a change in an organism's DNA can cause changes in all aspects of its life. Mutations are essential to evolution; they are the raw material of genetic variation.
