Concepts of Biology
1st Edition
ISBN: 9781938168116
Author: Samantha Fowler, Rebecca Roush, James Wise
Publisher: OpenStax College
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Textbook Question
Chapter 11, Problem 10RQ
Which situation would most likely lead to allopatric
a. A flood causes the formation of a new lake.
b. A storm causes several large trees to fall down.
c. A mutation causes a new trait to develop.
d. An injury causes an organism to seek out a new food source.
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Some species undergo polyploidy, which is a multiplication of their chromosomes. That is, they contain full chromosomes from each parent. How could speciation affect a polyploid organism?
A.
The polyploid organisms may experience gametic isolation.
B.
The polyploid organisms may experience behavioral isolation.
C.
The polyploid organisms may experience geographic isolation.
D.
The polyploid organisms would not be affected by speciation.
What is required for sympatric speciation to occur?
A. Continuous gene flow between different populations
B. Geographic separation of populations
C. Two populations that are different begin to reproduce and create hybrids
D. Emergence of a reproductive barrier
Which assumption of cladistics is stated incorrectly?a. Living things are related by descent from a common ancestor.b. Speciation can produce one, two, or three new species.c. Traits change from one state to another.d. The polarity of a character state change can be determined.
Chapter 11 Solutions
Concepts of Biology
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