Genetic bottleneck - Study guides, Study notes & Summaries

WVU Bio 117 Exam 1 Latest Update Graded A+ evolution a change in a population over time natural selection traits within a population vary, and some individuals leave more offspring than others based on Fitness and selection pressure Five Mechanisms of evolutionary change natural selection gene flow nonrandom mating genetic drift mutation Fitness reproductive success 3 types of selection directional stabilizing disruptive directional selection trend in the bell curv...

McMaster Bio 1M03: Exam 2024/2025 Questions with all the correct Answers (Real Actual Exam). Why might Pasteur's experiment be inconclusive? - ANS - The swan-necked flask broth may not support cell growth, or the broth was poisoned. Experiment did not confirm hypothesis that all cells come from pre-existing cells Why are replicates important in experiments? - ANS - To ensure that results were not achieved by random chance What is the definition of a replicate? - ANS - Unit that shares a c...

Another term for evolution by Darwin - Answer-descent with modification Are habitat isolations physical barriers? - Answer-No just different habitats not an actual physical fence or anything Convergent evolution - Answer-evolution of analogous (similar) features in related groups convergent evolution tells us about ancestry. t/f? - Answer-False it does not it only tells us the evolution of similar features Dependent selection favors which phenotype? - Answer-The less common in a population...

McMaster Bio 1M03: Exam Questions And Answers Why might Pasteur's experiment be inconclusive? - ANS The swan-necked flask broth may not support cell growth, or the broth was poisoned. Experiment did not confirm hypothesis that all cells come from pre-existing cells Why are replicates important in experiments? - ANS To ensure that results were not achieved by random chance What is the definition of a replicate? - ANS Unit that shares a common thing (4 mice in one cage = 1 repl...

BIO-107 test 1 Questions and Answers 100% Solved Microevolution Evolutionary change below the species level; Change in allele frequencies over generations. It is called micro evolution because it focuses on evolution in population, which is the smallest scale. (individuals do not evolve.) 3 mechanisms that cause allele change Natural seletion, genetic drift( chance events that alter allele frequencies), and gene flow (the transfer of alleles between populations). Population is a group...

McMaster Bio 1M03: Exam 2024/2025 Questions with all the correct Answers (Real Actual Exam). Why might Pasteur's experiment be inconclusive? - ANS - The swan-necked flask broth may not support cell growth, or the broth was poisoned. Experiment did not confirm hypothesis that all cells come from pre-existing cells Why are replicates important in experiments? - ANS - To ensure that results were not achieved by random chance What is the definition of a replicate? - ANS - Unit that shares a c...

Which kind of chemical reaction involves the attachment or removal of a phosphate group? a. Oxidation-reduction b. hydrolysis c. phosphorylation Which of the following statements about biological evolution is false? a. individual organisms evolve b. biological populations change over time c. evolutionary change has been observed in laboratory experiments d. evolutionary change has been observed in natural populations. e. All of the above is true correct answers a Which of the fo...

What is some evidence for endosymbiosis? - -Mitochondria replicate similar to binary fission -plastids have circular chromosomes -ribosomes are similar to prokayotes What is Hardy Weinburg equilibrium? - p^2 + 2pq+ q^2 =1 -If a population is at equilibrium, (percentages don't change) -No genetic drift, gene flow, no natural selection, no new alleles, no sexual selection -Genetic drift, gene flow, and natural selection cause most evolutionary change Acquired vs. Inherited traits - Acquire...

convergent evolution - unrelated or distantly related organisms evolve similar body forms, coloration, organs, and adaptations natural selection - the process whereby organisms better adapted to their environment tend to survive and produce more offspring (acts on individuals but populations evolve) Judeo- Christian perspective - The Creator: God made everything Linnaeus - Binomial nomenclature and nested classification system Cuvier - fossils in strata- catastrophism Hutton and Lyell - g...

BIO 121 Exam 3 Questions And Answers Whole-gene The molecular level describes genetic variation as nucleotide variability. Although populations do vary in their characteristics, it is at the gene level that genetic variation can be quantified. Although species do vary in their characteristics, it is at the gene level that genetic variation can be quantified. Individuals may vary in a population, but it is at the gene level that genetic variation can be quantified. - ANS At wha...