2 MicroevolutionHouse sparrows have adapted to the climate of North America, ]mosquitoes have evolved in response to global warming,and insects have evolved resistance to our pesticides.These are all examples of microevolution — evolution on a small scale.
21 Most of the 140 species of marsupials in Australia are found nowhere else in the world.
22 Worldwide Distribution of the Order Marsupiala Common NamesScientific NameNo. GeneraNo. SpeciesDistributionOppossumsDidelphidae1270AmericasMarsupial Mice, Marsupial Cats, Tasmanian DevilDasyuridae1450AustralasiaTasmanian WolfThylacinidae1TasmaniaNumbats/Banded AnteatersMyrmecobiidaeAustraliaBandicootsPeramelidae818Shrew OppossumsCaenolestidae37South AmericaPossums, Cuscuses, Gledero, RingtailsPhalangeridae1340Noolkanger or Honey PossumTarsipedidaeKoalasPhoscolaratidaeWombatsVombatidae24Kangaroo/Wallabies, Potoroos, Rat KangaroosMacrophodidae1547
43 MRSA - The deadliest form of Staph MRSA stands for methicillin-resistant staphylococcus aureusStaph bacteria that are resistant to the action of methicillin and related antibiotics are referred to as MRSAMRSA are not only resistant to all penicillin-like antibiotics, but they are often resistant to many other types of antibiotics as well.Infections with MRSA can be costly and difficult to treat because of limited antibiotic options.The proportion of staph infections that are methicillin-resistant has been steadily increasing, especially in the last years.By 2003, the percentage of MRSA among all staph isolates had risen three-fold to 38.6%. Almost 40% of staph found is MRSA now!MRSA is spread by physical contact, person to person, or person to contaminated objectMRSA symptoms for the most part, not different from any other staph infectionDiagnosis is confirmed by identifying the bacteria grown in a laboratory culture from a sample. The sample may be from a sterile site, such as blood or cerebrospinal fluid (CSF), or from a non-sterile site such as a draining lesion or a swab of the back of the nose.
44 Sexual Selectionsexual dimorphism bestows upon the females a large, pink, pillowy buttockssexual dimorphism bestows upon the females a large, pink, pillowy buttocks
61 Random FertilizationA zygote is formed by the random union of independently-produced gametes.For humans, the number of different gametes is 223 * 223, or 8,388,6082, giving 70,368,744,177,664 (70 trillion) possible combinations.
62 Outbreeding Mating organisms that are not closely related…. Is that bad or good?
63 Promotion of Outbreeding Flowering plants..male and female parts mature at different timesLions---dominant male chases away young maturing males…
64 Diploidy2n condition, whole other set of genes that could be an advantage when conditions change
65 Heterozygote superiority Hybrids have an advantage **Population retains greater variationEx sickle cell anemiaSs- no sickle cell, and resistance to malariaSS no sickle cell, die from malariass has sickle cell, and may die from that
67 Frequency Dependent Selection Minority advantageDecrease frequency of more common phenotypesEx.) Search image….predators are used to chasing prey that looks a certain way, if you look different you and your young will survive…
72 Small population breaks away from a larger one Small population breaks away from a larger one. Rarer alleles are over represented…..Amish 1770’s German population, extreme isolation, and intermarriage