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 to fly far enough to interbreed.

Expert Solution

allopatric speciation occurs when two populations are separated by a geographic barrier that blocks the gene flow between two populations.

Two populations of fish separated into species when a dam was built and their lake was divided in half- this is an example of allopatric speciation, dam separates two populations.

Two bird populations are separated by the Rocky Mountains and are therefore unable to interbreed-this is an example of allopatric speciation, rocky mountains separate two populations.

As continents drifted apart, populations of pterodactyls were eventually unable to fly far enough to interbreed- this is an example of allopatric speciation, continent drift separates two populations.

Sympatric speciation occurs when two populations living in the same habitat, have a different niche, for example they forage at different times, so they don`t find each other and mate.

so the answer is

B. Two species of fly breed at different times of year because they feed on different plant species in the same habitat.

gladiator answered 2 months ago

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?

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....

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?

Please Type Answer or Dont Bother Answering! Read the two scenarios below. Identify which is sympatric...

Please Type Answer or Dont Bother Answering! Read the two scenarios below. Identify which is sympatric speciation and which is allopatric speciation. Provide an explanation to support each answer. Two species of bee orchids grow in the Mediterranean and are pollinated by different types of bees. The Grand Canyon has geographically isolated the Kaibab squirrel from the Albert squirrel.

Which of the following represents an example of a population?

Which of the following represents an example of a population?all of the mammals living in the region of Boulder, Coloradothe gray squirrels and fox squirrels living in Springfield, Illinoisthe eastern gray squirrels that live in New York City's Central Parkthe red foxes found east of the Mississippi River in the United States

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]

Give an example of a mean that applies to two Populations for which you, as a...

Give an example of a mean that applies to two Populations for which you, as a Health Professional, would like to do a Hypothesis Test for. In your Hypothesis Test you will be testing the difference between these two Population means when the two samples are independent. Your discussion MUST include the two target Populations along with the Population characteristic that your mean is computed for, and the unit that is used when taking the sample measurements. As shown in...

During the speciation process between two populations, some genes in their genomes continue to be exchanged...

During the speciation process between two populations, some genes in their genomes continue to be exchanged between species (ongoing gene flow or introgression), while others are more restricted to their own new incipient species (sorting/moving towards fixation). If you were to compare the molecular evolutionary rates of these two types of genes, which would you expect to be evolving faster and why?

1 Using the appropriate rationale, which of the following scenarios represents the proper determination of the...

1 Using the appropriate rationale, which of the following scenarios represents the proper determination of the order in which management should sequence support department allocations under the sequential method of allocating support department costs to production departments? a.A Purchasing support department that serves one production department should be allocated earlier than a Janitorial support department serving five production departments. b.A Maintenance department with a less accurate cost driver should be allocated earlier than a Cafeteria support department with an extremely...

Which of the following scenarios is an example of additivity? Mutations in the gene encoding the...

Which of the following scenarios is an example of additivity? Mutations in the gene encoding the parahydroxylase enzyme can cause both cognitive impairment and albinism. Human hair color is determined by the combined effects of multiple genes. In laborador retrievers, mutations the effect of mutations at the B locus on coat color (converts brown to black melanin depends on an individual's genotype at the E locus (deposits melanin into hair follicle) In budgie birds, the B and Y genes act...

Question