| What are processes that cause natural selection? ICEAGE | Inherited 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 PAW | Predators
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 |
