What are the most common mechanisms of sympatric speciation and in which major group of organisms...

What are the most common mechanisms of sympatric speciation and in which major group of organisms does this happen most often? Distinguish between sympatric and allopatric and parapatric speciation. Which is considered the (far) more common mechanism of species formation? What does "gene flow" between populations do?

Expert Solution

gladiator answered 1 year ago

Distinguish between postzygotic and prezygotic isolating mechanisms. Which might evolve first if speciation were sympatric? Which...

Distinguish between postzygotic and prezygotic isolating mechanisms. Which might evolve first if speciation were sympatric? Which might evolve first if speciation were allopatric?

Which of the following scenarios represents an example of sympatric speciation? A. Two populations of fish...

Which of the following scenarios represents an example of sympatric speciation? A. Two populations of fish separated into species when a dam was built and their lake was divided in half. B. Two species of fly breed at different times of year because they feed on different plant species in the same habitat. C. Two bird populations are separated by the Rocky Mountains and are therefore unable to interbreed. D. As continents drifted apart, populations of pterodactyls were eventually unable...

1. Allopatric speciation is most likely to occur in which of the following scenarios? Group of...

1. Allopatric speciation is most likely to occur in which of the following scenarios? Group of answer choices There are two distinct possible feeding strategies within a given population, causing the rise of two species living in the same geographic area. All of the “parent” species of a new species go extinct, reducing gene flow between populations. A mutation changes the mating ritual followed by a subset of individuals in a population, and they end up forming an all-new species....

which of the following organisms would be most likely to fossilize? a common slug a common...

which of the following organisms would be most likely to fossilize? a common slug a common bird a rare bird a rare slug

1. Which mechanisms can lead to adaptations in populations? Which can lead to speciation? [which of...

1. Which mechanisms can lead to adaptations in populations? Which can lead to speciation? [which of these is microevolution and which is macroevolution?] 2. What is fitness and which mechanism is it most associated with? Why is the concept of fitness important? 3. How do heterozygote advantage and indirect selection work? Why are they important? [think about deleterious alleles, too]

Which insect mechanisms do you find most fascinating for either parasitizing or eating other organisms? Why?...

Which insect mechanisms do you find most fascinating for either parasitizing or eating other organisms? Why? Respond to the following in a minimum of 175 words

a) List the mechanisms which create genetic variation in sexually reproducing organisms.

a) List the mechanisms which create genetic variation in sexually reproducing organisms. b) List at least 4 conserved processes, molecules, or cell components which support the concept of a universal common ancestor. c) Define Mendel's two laws and state their cellular basis and limitations.

Compare and contrast using 2 two model organisms: a) the major signaling pathways, mechanisms and roles...

Compare and contrast using 2 two model organisms: a) the major signaling pathways, mechanisms and roles of genes that give rise to left-right asymmetry in vertebrates.b) Describe how some major organs are affected by L-R asymmetry in both your model organisms?

What is the correct order of the steps regarding speciation? Group of answer choices a. geographic...

What is the correct order of the steps regarding speciation? Group of answer choices a. geographic isolation->one species->reproductive isolation->divergent evolution->two species b. reproductive isolation->one species->reproductive isolation->two species c. two species->geographic isolation->one species->reproductive->isolation->divergent evolution d. one species->geographic isolation->divergent evolution->reproductive isolation->two species

Explain why speciation analysis is particularly important for Cr, As, and Se? What are the major...

Explain why speciation analysis is particularly important for Cr, As, and Se? What are the major valance (oxidation number) for each of these three elements? Describe their impact with regard to plant, and animal/human.

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