Reproductive isolation - Study guides, Class notes & Summaries

Oliver Ljustina // Exam 1 Bio 107 Questions and Answers Graded A+ macroevolutionary processes Large changes which occur over long time periods and result in new species describe Ernst Mayr said: population or group of populations whose members can interbreed and produce fertile offspring reproductive barrier interruption in courtship, fertilization, embryo formation or offspring developmenreproduct prezygotic barriers barriers occur before the formation of the zygote or fertilized egg...

BIOLOGY- EVOLUTION REVIEW EXAM QUESTIONS WITH CORRECT DETAILED ANSWERS GRADED A+ Stabilizing selection - Answer-Form of natural selection by which the center of the curve remains in its current position; occurs when individuals near the center of a distribution curve have higher fitness than individuals at either end Disruptive selection - Answer-Form of natural selection in which a single curve splits into 2; occurs when individuals at the upper and lower ends of a distribution curve hav...

sci 225 biological species concept - correct answer can reproduce fertile offspring in nature morphological species concept - correct answer species determined by body shape/other structural features phylogenetic species concept - correct answer smallest group of individuals that share common ancestor biogeography - correct answer study of geographic distribution of species over geological time evolution - correct answer change in frequency of alleles speciation - correct answer ...

Honors Biology – Evolution Questions and Answers Graded A+ What is the significance of genetic drift in small populations? Genetic drift causes random changes in allele frequencies, which can significantly impact small populations. How does the concept of speciation relate to evolution? Speciation is the process by which new species arise from existing ones, contributing to evolutionary diversity. What role does sexual selection play in evolution? Sexual selection favors tr...

Campbell Biology 8th Ed Test Bank chapter 24, 26-31 Exam Questions and Answers 100% Verified and Updated 1) Which of the following statements about species, as defined by the biological species concept, is (are) correct? I. Biological species are defined by reproductive isolation. II. Biological species are the model used for grouping extinct forms of life. III. The biological species is the largest unit of population in which successful reproduction is possible. A) I only B) II only ...

Adaptation - A trait that benefitted an organism in a particular environment (level: individual) Allopatry - restriction of gene flow because of physical separation Physical geographic barrier: individuals, even if they wanted to, do not have the ability to mate with other group Analogy - evidence for convergent evolution Homoplasy usually come about because of analogies Analogous structure share a common function due to selection pressures Example: wings Artificial selection - some gene...

BIO 345 Final Exam | Questions and Answers (Complete Solutions) Which pattern best characterizes the history of extinctions on Earth? A. An increasing per capita background extinction rate B. Five major mass extinctions and several lesser episodes of heightened extinction rates C. Three major mass extinctions and several lesser episodes of heightened extinction rates D. Three major mass extinctions and a low background extinction rate E. An increase in the number of mass extinctions over time...

Campbell Biology 8th Ed Test Bank chapter 24, 26-31 Exam Questions and Answers 100% Verified and Updated 1) Which of the following statements about species, as defined by the biological species concept, is (are) correct? I. Biological species are defined by reproductive isolation. II. Biological species are the model used for grouping extinct forms of life. III. The biological species is the largest unit of population in which successful reproduction is possible. A) I only B) II only ...

species - evolutionarily independent population or group of populations synapomorphy - a trait that is found in certain groups of organisms and their common ancestor, but is missing in more distant ancestors; identifies monophyletic groups; homologous traits that can be identified at the genetic, developmental, or structural level biological species concept - reproductive isolation between populations (they don't breed and don't produce viable, fertile offspring) - reproductive isolation...

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...