Biological Science (7th Edition)
7th Edition
ISBN: 9780134678320
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Greg Podgorski, Emily Taylor, Jeff Carmichael
Publisher: PEARSON
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Chapter 24, Problem 10TYPSS
Summary Introduction
To review:
The rationale behind the phenomenon of extinction as a result of the process of fragmentation and process leading to
Introduction:
The most probable reason for the extinction of the species as a result of fragmentation would be a small habitat area and an isolated population. In contrast, fragmentation can also lead to the speciation as a result of the occurrence of vicariance events due to genetic isolation.
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Chapter 24 Solutions
Biological Science (7th Edition)
Ch. 24 - 1. What distinguishes a morphospecies?
a. It has...Ch. 24 - 2. Which of the following describes vicariance?
a....Ch. 24 - Prob. 3TYKCh. 24 - 6. Sexual selection favors individuals with traits...Ch. 24 - 7. QUANTITATIVE If one species (2n = 10) crosses...Ch. 24 - Prob. 10TYPSSCh. 24 - Prob. 11PIATCh. 24 - 12. Before the application of DNA sequencing to...Ch. 24 - Svante Pääbo and colleagues sequenced the...
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- Two biologists are arguing at a conference. One says that the Biological Species Concept (BSC) is superior. Her colleague argues that a different species concept is needed. Which of the following claims of the biologist are true and which are false? 1. The BSC potentially would work for all multicellular organisms. 2. A Morphological Species Concept would work better for cryptic species than the BSC. 3. If two populations of snails are separated by a huge distance, they cannot mate. This means the BSC cannot apply to them.arrow_forwardSpeciation 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 ratearrow_forwardHi! I'm currently doing a project for my biology class and I've been searching through the internet and couldn't find an answer. I chose a golden eagle. I'm wondering, what's the type or the types of speciation that occurred that resulted in the organism (The golden eagle) it is today?arrow_forward
- Imagine a field of monkey flowers. Some of them are pink and others are red. It turns out that the pink flowers are pollinated mostly by bumblebees, whereas the red flowers are pollinated mostly by hummingbirds. As a result pink flowers are fertilized mostly by pollen from other pink flowers, and red flowers are fertilized mostly by pollen from other red flowers. The pink and red flowers have become separate species. What type of speciation is this? Sympatric speciation type (my answer) What mechanism of reproductive isolation was involved? ??arrow_forwardTHIS QUESTION WILL SHOW UP ON YOUR EXAM E: Let's talk about speciation! 1. What is the definition of a species? 2. Is the creation of a new species a type of micro-evolution or macro-evolution? 3. Describe 2 prezygotic barriers that can lead to speciation. For each barrier, include an example (these can be real or made up) and identify if this barrier is allopatric or sympatric.arrow_forwardWhat is adaptive radiation? Large-scale evolutionary patterns and trends in speciation The event when a species no longer has living members A lineage undergoes a burst of genetic divergences that gives rise to many species Changes in allele frequency that are always occurring in natural populationsarrow_forward
- which statement is false? 1)In the context of the evolution of senescence, the aphorism "live fast and die young" means that organisms with a more risky behavior will have a shorter life span. 2)Allopatric speciation is a type of speciation process that takes place in different geographic locations.arrow_forwardWhat is a reason that speciation can occur? Organisms within a species are brought into closer proximity by a physical barrier. Organisms within an ecosystem make adaptions that involve different breeding times or interactions. Organisms develop traits that are not beneficial to their survival, and these traits are passed from generation to generation. Organisms develop traits that are beneficial and pass on the same traits to all future generations within the same species.arrow_forwardThe 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]arrow_forward
- n the late 1800s, the saltation hypothesis (hopeful monster hypothesis) was proposed as a way to explain how speciation happens. Why was this hypothesis ultimately rejected by "the new synthesis"? Because it was silly Because it required individuals to evolve rather than populations Because it could not explain where mutations came from Because we discovered the DNA nature of genesarrow_forwardHow is sympatric speciation different from allopatric speciation? Group of answer choices Allopatric speciation requires a geographic barrier, while sympatric speciation occurs in one place Allopatric speciation results in hybrids, while sympatric speciation does not Allopatric speciation is a result of behavioral isolation, while sympatric speciation is a result of habitat isolation Allopatric speciation occurs in one place, while sympatric speciation requires a geographic barrierarrow_forwardn which situation would it make sense to use the morphological species concept? When you are able to collect data about how individuals in your study use their habitat, but you are unable to determine if they interbreed When working with fossils from extinct organisms When you only have genetic data about each organism in your study When you are not able to collect data about how individuals in your study use their habitat, but you are able to collect reproductive dataarrow_forward
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