4. When Asian rosefinches first arrived in the Hawaiian Islands (about 4.0 million years ago), theydiversified into a number of different species on different islands. Since the Pacific Ocean was a barrierbetween these islands before the ancestral species first arrived, this represents which pre-zygotic barrier?A. allopatric isolation by means of vicarianceB. gamete isolationC. mechanical isolationD. habitat isolationE. allopatric isolation by means of dispersal

Speciation is the process of formation of new species which reproductively isolated from one…

Answered: 4. When Asian rosefinches first arrived…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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Similar questions

Which of the following alleles is most likely to increase in a population due to natural selection? A. An allele that prevents peptidoglycan synthesis B. An allele that causes a helminth to produce eggs more quickly C. An allele that creates a non-functional cytoskeleton D. An allele that prevents algae from capturing blue light in photosynthesis
Which species concept is based on reproductive isolation? Group of answer choices A. biological B. morphological C. ecological D. phylogenetic
3. Sympatric speciation, in which the ancestral and descendant populations occupy exactly the same geographic area, with potential for hybridization between them, was first demonstrated (for animals): A. in the evolution of the polar bear Ursus arctos maritimus from the Kamchatka brown bear B. in the evolution of several Hawaiian honeycreepers from a single Asian migratory species C. in the evolution of metal-tolerant Anthoxanthum odoratum from metal-sensitive ancestors D. in the evolution of 13 Galapagos finches from a single South American migratory species E. in the evolution of the apple-maggot fly Rhagoletis pomonella from hawthorn fruit flies
Both a beetle and a lobster are arthropods, a monophyletic group of animals that have an exoskeleton with jointed appendages. Both the lobster and the beetle have antennae, modified legs that serve as sensory structures. Antennae were also found in the common ancestor of beetles and lobsters. This is an example of…. Group of answer choices A. allopatric speciation B. intrasexual selection C. intersexual selection D. convergence E. homology
20. Savanna giraffes are thought to have evolved from okapi-like ancestors as the climate became more arid in Africa (20 MYA). Since savanna giraffes and okapis occupied different geographic areas and habitats then, as they do today (grassland for giraffes, mountain forest for okapis), they represent: A. one of the best examples of speciation by cladogenesis due to stabilizing selection B. one of the best examples of speciation by anagenesis due to directional selection C. one of the best examples of sympatric speciation due to stabilizing selection D. one of the best examples of speciation by anagenesis due to stabilizing selection E. one of the best examples of speciation by cladogenesis due to disruptive selection
Biology Resource partitioning due to disruptive selection is more likely to cause speciation in: Group of answer choices D. peripatric populations than in sympatric populations. A. allopatric populations than in peripatric populations. C. sympatric populations than in allopatric populations. B. allopatric populations than in sympatric population
28
Which type of natural selection is involved in sympatric speciation? Group of answer choices A. intrasexual selection B. disruptive C.stabilizing D.directional E.intersexual
Genetic drift can be defined as Group of answer choices A. accidental changes in DNA structure b.how lazy loci evolve c. random change in allele frequency over time D. differences in fitness between alleles
Much research on extinction has focused on small populations, which are vulnerable for numerous reasons. A cyclical chain of events causing a small population to decline even further and become vulnerable to processes that lead to extinction is called an extinction vortex. Which of the following is not one of the factors leading to this phenomenon? A. Inbreeding between individuals in the population B. Little genetic variation in the population C. low tolerance to environmental stochasticity D. metapopulations with high connectivity E. low fitness of individuals within the population
Which of the following might occur in the same geographic area but actually be an example of micro-allopatry? A. A population of moths that becomes polymorphic for mating pheromones B. Jumping spiders in which a new mutation leads some males to do a novel mating dance to attract females C. Chromosomal duplication in a plant that reproductively isolate it D. Flightless aphids where a mutation leads a portion of the population to specialize on a different food plant
and generate variation in the genetic make-up of a population. A. genetic drift; natural selection B. mutation; sexual recombination C. overproduction of offspring; mutation D. sexual recombination; natural selection

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