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 12RQ
Which variable increases the likelihood of allopatric
a. lower rate of mutation
b. longer distance between divided groups
c. increased instances of hybrid formation
d. equivalent numbers of individuals in each population
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Chapter 11 Solutions
Concepts of Biology
Ch. 11 - Figure 11.7 Do you think genetic drift would...Ch. 11 - Which scientific concept did Charles Darwin and...Ch. 11 - Which of the following situations will lead to...Ch. 11 - What is the difference between micro- and...Ch. 11 - Population genetics is the study of ________. a....Ch. 11 - Galapagos medium ground finches are found on Santa...Ch. 11 - In which of the following pairs do both...Ch. 11 - The wing of a bird and the arm of a human are...Ch. 11 - The fact that DNA sequences are more similar in...Ch. 11 - Which situation would most likely lead to...
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- What is the greatest source of genetic variation in plant and animal populations? a. Geographic variation b. Recessive masking in heterozygotes c. Selection d. Sexual reproductionarrow_forwardWhich could lead to allopatric speciation by two populations of snail? Group of answer choices A. creation of a new mountain range between two populations B. a mutation in all members of one population which prevents gamete fusion between the two populations C. a change in breeding time of one population D. a change in mating behavior in one population but not in the otherarrow_forwardWhich is the most important factor affecting the change in allele frequency from one population to another? A. Reproductive isolationB. Disruptive selectionC. Environmental factorsD. Genetic engineeringarrow_forward
- Which process in a hybrid zone increases the likelihood of speciation? A. stability – when a hybrid zone remains the same B. reinforcement – when a hybrid zone widens and fewer hybrids are formed C. convergence – when a hybrid zone narrows and more hybrids are formed D. fusion – when a hybrid zone disappears and separate species fuse into onearrow_forwardSecondary contact after divergence rarely results in? A. creation of a hybrid zone B. formation of a new species C. the rapid decline of both populations D. extinction of one populationarrow_forwardWhat is the main cause of genetic variation between identical twins? A. genetic drift B. the movement of alleles through sexual reproduction C. mutations generated in the previous generation D. geographic variation within a population E. environmental effectsarrow_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_forwardWhich is a source of the variation in human populations that impact fitness? a. Random alignment during meiosis b. mutations at fertilization c. Crossing over during mitosis d. All of the abovearrow_forwardf there are 300 diploid individuals in a population, how many alleles are in the total gene pool? a. 1200 b. 150 c. 300 d. 600arrow_forward
- What is the term for organisms producing different phenotypes due to differences in the environment? a. Genetic variation b. Additive variation c. Phenotypic plasticity d. Reaction normarrow_forwardWhich situation is not an example of a prezygotic barrier? a. Two species of turtles breed at different times of the year. b. Two species of flowers attract different pollinators. c. Two species of birds display different mating dances. d. Two species of insects produce infertile offspring.arrow_forwardWhich reproductive combination produces hybrids? a. when individuals of the same species in different geographical areas reproduce b. when any two individuals sharing the same habitat reproduce c. when members of closely related species reproduce d. when offspring of the same parents reproducearrow_forward
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