Vestigial traits - Study guides, Class notes & Summaries

Cell Theory - All organisms are made of cells, and all cells come from pre-existing cells. Conclusion: If you trace a cell's lineage back far enough, you will discover that all cells are descended from a common ancestral cell Evolution - The heritable change in a population over time or a change in gene frequency in a population over a number of generations Proximate process - what happens in short term, measured in fractions of lifetimes Ultimate process - longer timeframe (lifeti...

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...

SFA BIO 133 Bennett Exam 2 Questions & Answers 2024 artificial selection - ANSWER-only individuals with preferred traits allowed to breed evolution of pathogens - ANSWER-over time, bacteria become resistant to antibiotis over time, pest become ___________ to pesticides - ANSWER-resistant comparative anatomy - ANSWER-the study of similarities and differences among structures of living species vestigial features - ANSWER-traits that were helpful to an ancestor but are not useful t...

define one genetic map unit ~ the physical distance between two genes that results in a 1% frequency of recombination In birds, sex is determined by ZW chromosome inheritance. Males are ZZ and females are ZW. Within pigeon populations there is a recessive, Z-linked allele that is lethal in embryos. What is the expected sex ratio in the offspring of a cross between a male that is heterozygous for the lethal allele and a wildtype female? ~ 2:1 male to female A recessive allele on the X c...

AP Biology Exam Questions and Answers Graded A+ What are the 2 theories of evolution? Explain each Gradualism- geologic changes result from slow, gradual, continuous process Punctuated Equilibrium- Long period of stasis punctuated by short bursts of significant change. What was Lamarck's theory and why was it wrong? Lamarck = Inheritance of Acquired characteristics- traits acquired during lifetime could be passed on What is natural selection Comptetition for limited resources re...

SFA BIO 133 Bennett Exam 2 Questions & Answers 2024 artificial selection - ANSWER-only individuals with preferred traits allowed to breed evolution of pathogens - ANSWER-over time, bacteria become resistant to antibiotis over time, pest become ___________ to pesticides - ANSWER-resistant comparative anatomy - ANSWER-the study of similarities and differences among structures of living species vestigial features - ANSWER-traits that were helpful to an ancestor but are not useful t...

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...

McMaster Bio 1M03: Exam Questions And Answers All Verified 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 ...

Biology 1M03 Midterm1 Exam Questions And Answers characteristics of living organisms - ANS - made up of 1 or more cells - processes and carries info - reproduces/replicates - evolves and changes - uses energy cell theory - ANS all organisms are made of cells and cells from pre-existing cells Louis Pasteur experiment - ANS tested growth in flasks of broth; no growth in the flask where the top was sealed Darwin & Wallace's theory of evolution - ANS all species are rel...

radiometric dating ,radiocarbon dating,potassium-40 dating, half-life, punctuated equilibrium, Cambrian explosion, macroevolution, microevolution, Linnaeus, Lamarck,Cuvier,Lyell and Hutton,Malthus,descent with modification,selective breeding The process of humans intentionally selecting a few organisms with desired traits to serve as parents of the next generation, over time producing organisms with altered characteristics species a group of related organisms sharing a distinctive form. If se...