Out of the choices given, the mechanisms that drives evolution is natural selection. The correct answer is B, natural selection.
Chromosomes makes up genes while genes and chromosomes make up the entirety of DNA. A living organism inherits 46 chromosomes, 23 from each parent. These chromosomes are not genes but they form genes, which are just the traits of an individual that are unique. DNA is the entire make up of an organism that controls everything about a person such as likelihood to have disease or their physical appearance.
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Genetic variation is an important force in evolution as it allows natural selection to increase or decrease frequency of alleles already in the population. ... Genetic variation is advantageous to a population because it enables some individuals to adapt to the environment while maintaining the survival of the population.
Desert and steppe regions on Earth cover about 42 million square
kilometers, or about 30 percent of Earth's land surface
The answer is inflammatory response. T –suppressor (now referred to as T-regulatory cells) are significant in the negative feedback loop in inflammation. Therefore they downregulate inflammation when an infection has been eliminated. Only when there is an infection in the body does other factors reduce the suppression by Tregs.
