The first necessary step for speciation to occur is: Group of answer choices the erection of...
The first necessary step for speciation to occur is:
Group of answer choices
the erection of a geographic barrier to prevent gene flow
reproductive isolation to reduce mating opportunities between populations
the presence of strong sexual selection on different traits in two populations
the presence of suitable "pre-adaptations" to favor speciation
the presence of strong genetic drift’
Homework Answers
2nd is correct option because reproductive isolation is most important in all type of speciation so that gene flow between them stop.
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The first necessary step for speciation to occur is:
Group of answer choices
the erection of...
Create a concept map of Speciation. Be sure to include the following concepts and to label...
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
Of the following evolutionary forces; crossing over, directional selection, mutation, speciation, stabilizing selection, sex, gene flow...
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?...
this is an evolution question Allopatric speciation is probably the most common way that new species...
this is an evolution question
Allopatric speciation is probably the most common way that new species form. Please describe a hypothetical scenario in which an initial ancestral population (pick whatever species you want) could split to form a new species through allopatric speciation. A fully. correct answer will at least incorporate ALL of the following terms: gene flow.divergence, natural selection (including sexual selection), genetic drift, and reproductive isolation
Which of the following is a correct comparison between the speciation of the trumpeters of the...
Which of the following is a correct comparison between the speciation of the trumpeters of the Amazon and the ongoing divergence of the maggot flies of North America? See Section 24.3 Both events resulted from barriers to gene flow that arose between populations as well as mutations, natural selection, and genetic drift that occurred in those populations. Both events involved a large geographic barrier between populations. Both events involved polyploidization. Both events involved populations that were overlapping in their ranges.
In the cladistic analysis that puts bumblebees and honeybees in the same taxon (family Apidae), which...
In the cladistic analysis that puts bumblebees and honeybees in the same taxon (family Apidae), which of the following would most likely constitute a sister group for this study oak trees lobsters wasps spiders Question 3 (1 point) A fixed action pattern is initiated by the presentation of a conspecific Imprinting sign-stimulus Novel- stimulus Bilaterally symmetric animals: 1. Exhibit cephalization 2. Are triploblastic 3. have a notocord during some stage of their life history O 1&2 O 2 & 3...
Please be sure to answer this right !!! Problem 21.2 Part A What are the roles...
Please be sure to answer this right !!!
Problem 21.2 Part A What are the roles of mutation, migration, and selection in bringing about speciation? Drag the terms n the left to the appropriate blanks on the right to complete the sentences. Not all terms will be used. Reset Help interbreed successfully reduces genetic differences between populations of a species and can migration the level of genetic variation in some populations. ecological isolation Mutations that are favorable or detrimental are...
16. Which mode of natural selection is demonstrated by the Ginkgo tree today remaining essentially similar...
16. Which mode of natural selection is demonstrated by the Ginkgo tree today remaining essentially similar morphology since the Mesozoic era? a. stabilizing b. directional c. diversifying d. sexual e. artificial 17. Which scenario will demonstrate disruptive (diversifying) selection? a. There is heterozygote advantage (heterozygous individuals have the highest fitness). b. Female flies collect sperm from different males in her sperm bag. c. Individuals with intermediate phenotype are inferior competitors against homozygous individuals d. Insects become resistant to the most...
need answer for # 7 !!! ower 7. For speciation to occur, which of the following...
need answer for # 7 !!!
ower 7. For speciation to occur, which of the following must be limited. Circle all that apply a) gene flow b) natural selection c) genetic drift d) senescence e) infanticide 8. The Red Queen hypothesis proposes that host species tend tother parasites a) consistently evolve decisive defenses that protect them from b) be driven to extinction by c) evolve new defenses at similar rates to the newly evolved threats from 9. Predator-prey interactions often...
24. Parapatric speciation would be expected to occur most often:
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...
Define/Explain the following in at least 2 or more complete sentences. Your answers must be typed...
Define/Explain the following in at least 2 or more complete sentences. Your answers must be typed and turned in on the day of the Test, before you take the Test. 1. Natural selection 2. Evolution 3. Adaptation 4. Gene 5. Genome 6. Homozygous vs heterozygous 7. Genotype vs phenotype 8. Dominant allele vs recessive allele 9. Incomplete dominance 10. Qualitative traits vs quantitative traits 11. Phenotypic plasticity vs developmental plasticity 12. Acclimation 13. Genetic differentiation 14. Gene pool 15. Target...
this is an evolution question
Allopatric speciation is probably the most common way that new species form. Please describe a hypothetical scenario in which an initial ancestral population (pick whatever species you want) could split to form a new species through allopatric speciation. A fully. correct answer will at least incorporate ALL of the following terms: gene flow.divergence, natural selection (including sexual selection), genetic drift, and reproductive isolation
Which of the following is a correct comparison between the speciation of the trumpeters of the Amazon and the ongoing divergence of the maggot flies of North America? See Section 24.3 Both events resulted from barriers to gene flow that arose between populations as well as mutations, natural selection, and genetic drift that occurred in those populations. Both events involved a large geographic barrier between populations. Both events involved polyploidization. Both events involved populations that were overlapping in their ranges.
In the cladistic analysis that puts bumblebees and honeybees in the same taxon (family Apidae), which of the following would most likely constitute a sister group for this study oak trees lobsters wasps spiders Question 3 (1 point) A fixed action pattern is initiated by the presentation of a conspecific Imprinting sign-stimulus Novel- stimulus Bilaterally symmetric animals: 1. Exhibit cephalization 2. Are triploblastic 3. have a notocord during some stage of their life history O 1&2 O 2 & 3...
Please be sure to answer this right !!!
Problem 21.2 Part A What are the roles of mutation, migration, and selection in bringing about speciation? Drag the terms n the left to the appropriate blanks on the right to complete the sentences. Not all terms will be used. Reset Help interbreed successfully reduces genetic differences between populations of a species and can migration the level of genetic variation in some populations. ecological isolation Mutations that are favorable or detrimental are...
16. Which mode of natural selection is demonstrated by the Ginkgo tree today remaining essentially similar morphology since the Mesozoic era? a. stabilizing b. directional c. diversifying d. sexual e. artificial 17. Which scenario will demonstrate disruptive (diversifying) selection? a. There is heterozygote advantage (heterozygous individuals have the highest fitness). b. Female flies collect sperm from different males in her sperm bag. c. Individuals with intermediate phenotype are inferior competitors against homozygous individuals d. Insects become resistant to the most...
need answer for # 7 !!!
ower 7. For speciation to occur, which of the following must be limited. Circle all that apply a) gene flow b) natural selection c) genetic drift d) senescence e) infanticide 8. The Red Queen hypothesis proposes that host species tend tother parasites a) consistently evolve decisive defenses that protect them from b) be driven to extinction by c) evolve new defenses at similar rates to the newly evolved threats from 9. Predator-prey interactions often...
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