Of the following evolutionary forces; crossing over, directional selection, mutation, speciation, stabilizing selection, sex, gene flow and genetic drift which promote or maintain genetic variation within a population?
a) crossing over only b) directional selection and sex c) directional selection, mutation, and speciation d) crossing over, mutation, sex, and gene flow e) only sex
Of the following evolutionary forces, crossing over, directional selection, mutation, speciation, stabilizing selection, sex, gene flow and genetic drift which promote genetic differentiation (divergence) among populations?
a) directional selection, speciation, and genetic drift b) crossing over, directional selection, stabilizing selection, and sex c) sex and gene flow d) mutation, gene flow, and genetic drift e) crossing over, mutation, stabilizing selection, sex, and gene flow
What factual evidence can be offered to indicate that geographic isolation promotes speciation?
a) related species are often separated by a conspicuous geographic boundary. b) speciation appears to occur more rapidly on islands. c) populations on the opposite sides of wide ranging species are often differentiated. d) all of the above (a, b and c). e) there can be no evidence offered since speciation is too slow to observe.
There are two alleles common at the zic-zac locus in a Caribbean snail. If the zic allele occurs at 40% and the zac allele occurs at 60%, how many zic-zac heterozygotes would you expect to observe in the populations?
20%, 24% ,10%, 48% 30%
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Of the following evolutionary forces; crossing over, directional selection, mutation, speciation, stabilizing selection, sex, gene flow...
During the evolutionary synthesis, biologists conclusively identified natural selection, gene flow, genetic drift, and mutation as the major causes of evolution within species. Using the scientific definition of evolution, explain how these forces cause populations, species, and higher taxa to evolve.
are these correct Stopping which of these evolutionary forces can lead to speciation? A. genetic drift OB. gene flow OC. natural selection OD. sexual selection O E. mutations QUESTION 2 Speciation is most commonly a result of A. copatry OB. antipatry OC. allopatry OD. sympatry O E. sexual selection
5. Using the following evolutionary concepts (speciation, macroevolution, microevolution, gene flow,genetic drift, and natural selection), represent your idea of how these evolutionary concepts are related to another. Use lines to connect and show the relationship between concepts. Write a word or short phrase by each line to specify the relationship between cocnepts.
24. Parapatric speciation would be expected to occur most often: a. in the same homeland b. near a common border between two populations c. within a group of interbreeding populations d. across obvious geographical barriers e. by divergence from a common interbreeding population 25. Match the evolution concepts: _______ gene flow a. can lead to interdependent species _______ natural selection b. changes in a population's allele frequencies due to chance alone _______ mutation c. alleles enter or leave a population _______ genetic drift d. evolutionary history _______ adaptive radiation e. occurs in different patterns _______ coevolution...
Select the option that contains three evolutionary forces a) natural selection, genetic drift, gene flow b) somatic cells, chromosomes, natural selection c) non-random mating, genomes, variation d) proteins, genetic drift, alleles e) natural selection, DDT resistance, environment
Create a concept map of Speciation. Be sure to include the following concepts and to label the links. If you want, you can add in additional concepts, but you do not have to. Processes of Evolution •Genetic variation •Gene flow •Pre-zygotic isolation •Post-zygotic isolation •Biological Species Concept •Allopatric Speciation •Sympatric Speciation •Adaptive Radiation •Genetic Drift •Natural Selection •Sexual Selection •Mutation •Phylogenetic Tree •Geographic Separation
13. Which of the following is the only evolutionary process that consistently produces adaptation? a. Genetic drift b. Natural selection c. Gene flow d. Mutations 14. Which of the following is NOT a possible result when isolated populations come into contact? a. Dispersal b. Stability c. Reinforcement d. Fusion e. New Species 15. What is greater than mutations in producing variation in diploids? a, transformation b. sexual recombination c. natural selection d. punctuated equilibrium e. conjugation 16. Which type of...
What is the basic idea of natural selection? What is evolutionary adaption? Describe the five types of evidence of evolution. Click or tap here to enter text. Click or tap here to enter text. Click or tap here to enter text. Click or tap here to enter text. Click or tap here to enter text. What kinds of adaptations did Darwin observe in the Galápagos finches? What are the two observations that formed that basis of Darwin’s theory of natural...
5. Based on the "Allopatric Speciation" video, which of the following can lead to genetic divergence? Select ALL that apply. Select all that apply Founder Effect Gene Flow Natural Selection Mutation Genetic Drift6. There are two isolated populations - Population 1 and Population 2. These populations have been separated for a long period of time. Now, imagine that you bring individuals from these populations together to see if they will interbreed. You find that there is only limited interbreeding between Population 1 and Population 2 and...
1. Which of the following mutations could create a frameshift and change the sequence of a protein? 1. A back mutation 2. Deletion of a base 3. Insertion of a base 4. A base substitution of C for A I 2. Which of the following is NOT common to ALL forms of speciation? Select one: a. Formation of a new species b. None, all of these are common to all forms of speciation c. Ecological isolation d. Limited gene flow...