What is speciation Study guides, Class notes & Summaries

Formation of a new species is called - ️️speciation As a mechanism of evolution, natural selection can be most closely equated with - ️️unequal reproductive success What is NOT an example of natural selection? - ️️On a tree, leaves that grow in the shade are larger than those that grow in the sun Which of the following pairs of anatomical structures are homologous? - ️️bat wing and human arm A gene pool is - ️️All of the alleles in a population The smallest bio...

BSC 1005 Final Exam - Questions and Answers Under the biological species concept, what criterion is used to assign populations of organisms to the same biological species? being able to interbreed and produce fertile offspring Speciation requires ______. genetic isolation The wing of a penguin is ______ the wing of a butterfly. analogous to Homology is evidence of ______. Common ancestry Feathers in birds appear to have first evolved for insulation but later conveyed a new advantage in helping ...

Section I (Multiple-Choice Questions) Time: 80 minutes 100 questions Directions: Each of the following questions or statements is followed by five possible answers or sentence completions. Choose the one best answer or sentence completion. 1. In which of the following are the nuclear activities most opposite? A. prophase and metaphase B. prophase and anaphase C. prophase and telophase D. metaphase and anaphase E. metaphase and telophase 2. A severe storm forms a new river that...

What is the origin of the Earth? - Answer-Formed out of a solar nebula What are the origins of Life? - Answer-Archaea - the oldest origin of life on Earth What is kinetic energy? - Answer-The energy of motion What is heat energy? - Answer-Energy created by particles of matter rubbing together What is density? - Answer-A measurement of the amount of matter in a given volume of something. (mass per unit volume) What is convection? - Answer-Transfer of heat through currents caused by differen...

In a hierarchical classification, we belong to the family... correct answersHominidae Hooves and teeth of horses have coevolved with the evolution of the grasslands, and grasslands first evolved in cool and dry climate about 33 million years ago. (T or F) correct answersTrue A defining characteristic of sympatric speciation is... correct answersThe appearance of new species in the midst of old ones What species concept defines a species as a set of organisms representing a specific evol...

Question 1. What two things do nodes represent on phylogenies? Nodes represent the most recent common ancestor of two or more descendant lineages and represent a speciation event. Question 2. Compare the branching patterns of phylogenies 1-3 above. Which statement below correctly describes the patterns among trees 1-3? Tree 1 = Tree 2 Question 3. Which node represents the MRCA for taxa F and G? 3 Question 4. Which taxon or taxa is/are the sister group to E + F? D, G, H Question 5. If y...

Paciulli FINAL BIO 181 NCSU, Exam Questions and answers, 100% Accurate. VERIFIED. To the west of Wallace's Line in Southeast Asia are organisms related to Asiatic species. To the east of the line, there is a mixture of species of Asian and Australian origin. This is an example of: - -biogeography Two members of the initial Amish migration to Pennsylvania in 1744 shared the recessive allele for Ellis-van Creveld syndrome, which results in a long narrow chest and shortening of the limbs. ...

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...

T/F: Species diversity increases as you approach the equator correct answer: True What are possible reasons why more species occur near the equator correct answer: - More time without geological disruptions (e.g., glaciers) - More niches - Climatic stability - Greater biological productivity What is speciation correct answer: The formation of two species from one ancestral species What factors lead to speciation correct answer: - natural selection - sexual selection - genetic d...

What is micro-evolution? - Changes in allele frequencies within populations, often associated with adaptation, can be measured from one generation to the next "small changes" What is macro-evolution? - Major changes in the history of life, origin of new species, generates biological diversity "big changes" What is a species? - a group of populations whose members have the potential to interbreed with one another in nature to produce fertile offspring What is allopatric speciation? - ...