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EBK BIOLOGY: CONCEPTS AND APPLICATIONS
9th Edition
ISBN: 8220100477805
Author: STARR
Publisher: CENGAGE L
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Chapter 17, Problem 6SQ
Summary Introduction
Introduction:
In a single population, variations in a single gene can be seen. These variations are caused because of presence of two or more alleles of the gene which is responsible for that trait. Even after presence of traits, similarities to some extent are maintained in different populations. Maintenance of similarities between populations can help in their interaction with each other if living in similar habitats.
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Students have asked these similar questions
______is the original source of new alleles. a. Mutation c. Gene flow b. Natural selection d. Genetic drift
The _____________ hypothesis for protein variation posits that natural selection is important in maintaining variation.
a.
neutral mutation
b.
balance
c.
directional
d.
genetic
If two mouse populations do not interbreed but are found in the same area, they may form different species due to
d. Adaptive radiation
c. Spontaneous generation
a. Geographic isolation
b. Mutations
OOOO
Chapter 17 Solutions
EBK BIOLOGY: CONCEPTS AND APPLICATIONS
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- _________ increases the similarities between the gene pools of two populations. A. natural selection B. genetic drift C. mutation D. gene flow E. population bottleneckarrow_forwardThe type of speciation that takes place in geographically overlapping populations is known as ________________________. A. Allopatric speciation B. Sympatric speciation C. Morphological speciation D. Physiological speciationarrow_forward89. Natural selection can best be described as _________. A. differential survival and/or reproduction among heritable entities B. macroevolutionary change C. microevolutionary change which results in new species D. none of the above describe natural selectionarrow_forward
- Variation among pre-cells was due to ________. A. the bottleneck effect B. natural selection C. mutation D. genetic drift 82.arrow_forward____tends to keep populations of a species similar to one another. a. Genetic drift c. Mutation b. Gene flow d. Natural selectionarrow_forwardA physical barrier separates a single species, causing two separate populations to form. Over time these two populations adapt to their environments. Eventually, these two populations are no longer able to successfully reproduce with each other. This is known as __________. A. Sympatric speciation B. Allopatric speciation C. Autopatric speciation D. Parapatric speciationarrow_forward
- Which of the four evolutionary mechanisms make a population better adapted to its environment? A. Migration B. Genetic drift C. Mutations D. Natural selection. arrow_forwardEvolution______ . a. is change in a line of descent b. is the same as natural selection c. is the goal of natural selection d. explains the origin of lifearrow_forward1. ____ occurs when allele frequencies change over generation due to random chance. a. extinction b. gene flow c. natural selection d. mutationarrow_forward
- When males and females of a population look or act differently, it is referred to as ________. a. sexual dimorphism b. sexual selection c. diversifying selection d. a clinearrow_forwardChange in allele frequency of a population is called_____ . a. macroevolution c. inbreeding b. adaptive radiation d. microevolutionarrow_forwardThe word “theory” in theory of evolution is best replaced by ________. a. fact b. hypothesis c. idea d. alternate explanationarrow_forward
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