The Abert and the Kaibab species of squirrels live on opposite ends of the Grand Canyon. Physically they are very similar to each other, which leads scientist to think that when the Grand Canyon was shallower (millions of years ago) the populations use to have genetic contact (sexual reproduction). In present day, they are completely isolated from each other. When tested the Abert and Kaibab squirrels cannot produce a fertile offspring. This is an example of ___ speciation. [Fill in the blank]

The Abert and the Kaibab species of squirrels live on opposite ends of the Grand Canyon. Physically they are very similar to each other, which leads scientist to think that when the Grand Canyon was shallower (millions of years ago) the populations use to have genetic contact (sexual reproduction). In present day, they are completely isolated from each other. When tested the Abert and Kaibab squirrels cannot produce a fertile offspring. This is an example of ___ speciation. [Fill in the blank]

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter20: Speciation And Macroevolution

Section: Chapter Questions

Problem 4TYU: The first step leading to allopatric speciation is (a) hybrid inviability (b) hybrid breakdown (c)...

See similar textbooks

Similar questions

ALLOPATRIC SPECIATION What would the results be in each generation if a few fruit flies from the sweet potato population had been placed in the banana population.Explain your prediction.
Homologous genes that arise from speciation and gene divergence are called _____.
The first step leading to allopatric speciation is (a) hybrid inviability (b) hybrid breakdown (c) adaptive radiation (d) geographic isolation (e) paedomorphosis
Which of the following will prevent speciation from happening? * Geographic Isoloation Mutations Interbreeding Behavioral Isolation
Two species of iguana in the Galapagos share a common ancestor from the mainland of South America. The two species live on the same island, but differ in the timing of their breeding seasons. This is an example of a ____. Hybrid breakdown Mechanical isolation Temporal isolation Gametic isolation
Which of the following forms of reproductive isolation illustrates a prezygotic barrier to gene flow? O Species A forms hybrids with species B and the hybrids are able to breed back with either of the two parent species to produce healthy fertile offspring. O Two closely related birds, the lazuli bunting and indigo bunting, sing similar songs to attract mates and even though human ears can not distinguish them the females never make wrong choices in choosing who to mate with. O Two species of turtles living in a large lake have different ecological requirements and never interact. O Several species of corrals in a Honduras corral reef release gametes about the same time but inter- specific attraction of gametes does not occur. O All but one of these illustrates a type of prezygotic barrier to gene flow.
Two sympatric species of wildflowers grow the same habitat but hybrids are extremely rare in nature despite the facts that viable hybrids can easily be produced in the lab. The rarity of hybrids is hypothesized to be the consequence of the difference in the blooming season because one species blooms in April while the other blooms in June. This hypothesis is referring to what type of reproductive isolation? Question 6 options: Mechanical isolation Behavioural isolation Temporal isolation Habitat isolation Gametic isolation
Speciation events can occur on a variety of timescales. Which factor is NOT likely to influence the rate of speciation? Selection pressures Color of the organism Generation time Mutation rate
please help with these two questions: 1. An earthquake and tsunami, Richter scale of 7, destroyed a small village near the epicenter in Indonesia. Families were separated, food became scarce and the land was too damaged for traveling between now divided landmasses. This situation prevails for an extended time period. Which of these speciation models more than likely will occur under these conditions? a. Sympatric b. Allopatric c. Peripatric d. Parapatric e. None of the above 2. The Hardy–Weinberg theorem is an important mathematical proof because a. It demonstrates that dominant alleles are more common than recessive alleles. b. It demonstrates evolution. c. It demonstrates that a locus can have only one of two alleles. d. It demonstrates that in the absence of outside forces, allele frequencies of a population will not change from one generation to the next. e. It demonstrates that heterozygotes are always better.
Imagine there are two populations of the same species of squirrel. One population lives on one side of a large river, while the other lives on the opposite side. Over the course of a few million years, the river carves an impassible canyon between the two populations. Eventually, they become two new species. This is an 'example of: Hardy Weinberg Equilibrium O Sympatric Speciation O Allopatric Speciation Gene Flow
This type of species isolation is being used during allopatric speciation. Group of answer choices: A- behavioral B- habitat C- gametic D- mechanical Please give me the answer along with the reason. I'll definitely give a like.
What is the difference between parapatric speciation and sympatric speciation?I understand that it has to do with habitat but I am having trouble conceptualizing the differences. A simplistic analogy or metaphor to help understand the differences would be very appreciated as I am a disabled student. Thank You.