Define evolution: What is decent with modification? Use Mosquitoes and DDT to explain natural selection. What does the term fitness mean in the context of evolution?

What is the difference between evolution, natural selection, and artificial selection? A. Evolution is a genetic change in a population over time which can occur through natural selection. Artificial selection is the differential reproduction of individuals in a population to promote the characteristics chosen by the breeder.   B. Natural selection is the change of allele frequencies in a population over time.  Evolution leads to differential survival and reproduction of individuals. Artificial selection has produced domesticated animals and plants.   C. Evolution is a mechanism of artificial selection.  Natural selection is a form of artificial selection in which nature selects the characteristics that are most beneficial to a species.   D. Artificial selection is a mechanism of evolution and is the main process of domesticating animals and plants for human use.  Natural selection is the same as evolution.

What is fitness? To what degree does fitness dependon the environment in which organisms live?

Which of the following statements best characterizes genetic diversity in humans? 1.) There are far more genetic differences between populations/groups than there is variation within populations. 2.) Between-group differences in most phenotypic traits (e.g., athletic ability, performance on standardized tests, etc.) are mostly inherited and due to the effects of natural selection. 3.) The vast majority of polymorphisms (such as SNPs) in the genome are informative about a person's ancestry (in other words, you could get a pretty good idea of someone's ancestry by looking at their genotype at just about any random SNP in the genome). 4.) Humans have much lower levels of genetic diversity than most other animals.

Point mutations, like the single-nucleotide substitution in human sickle-cell trait, illustrate which of the following evolutionary features? mutations are never detrimental and always advantageous, regardless of the environment mutations might be either advantageous or detrimental, depending on the environment mutations are always detrimental and never advantageous, regardless of the environment mutations are neither advantageous nor detrimental, regardless of the environment mutations are always both advantageous and detrimental, regardless of the environment