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level: 5.2 Natural Selection

Questions and Answers List

level questions: 5.2 Natural Selection

QuestionAnswer
What are processes that cause natural selection? ICEAGEInherited variation: within a population Competition: overproduction Environmental Pressures: cause selection Adaptations: individuals with beneficial traits are more likely to survive Genotype Frequency: changes over time Evolution: change in allele frequency within the population
What are the 3 types of mutations?beneficial: (missense) change gene sequence and creates new variations detrimental: (nonsense) overrule normal function of the trait neutral: (silent) no effect
What are some examples of environmental pressures? PANDA PAWPredators Available resources Nutrient supply Diseases Accumulation of wastes Phenomena (disasters) Abiotic factors Weather
What are antibiotics?chemicals made by microbes to kill or inhibit the growth of bacteria = used for infections some bacterial strains have evolved antibiotic resistance genes and reproduce through binary fission selective pressure of antibiotics = antibiotic resistance gene to be more frequent (Evolution)
What is an example of antibiotic resistance?golden staph causes infections to the skin (lesions) treated with methicillin but bacterial strains developed resistant (MRSA) Alternative antibiotics are prescribed now