Concept explainers
The genetic description of an individual is its genotype, whereas the genetic description of a population is its (a)
Introduction: A gene can be referred to as a part of genetic material. They pass information from one generation to another. The genes contain DNA which decides the genotype of an individual. The genotype along with the geographical conditions determines the phenotype of an individual. The phenotype can be described as the physical appearance of an individual.
Answer to Problem 1TYU
Correct answer: Gene pool represents the genetic information of a population. Hence, the correct answer is option (b).
Explanation of Solution
Reason for the correct answer:
Gene pool of a population gives information about all the alleles for all the loci present in that population. It provides information about the genotypic description of the population by which phenotypic description of that population can be determined. The genetic variation among different populations can also be identified with the help of a gene pool. Therefore, gene pool gives the genetic description of a population.
Option (b) is given as “gene pool”.
Gene pool gives the information about all the alleles of all the loci in a population which represents the genetic description of a population. Hence, option (b) is correct.
Reasons for incorrect answers:
Option (a) is given as “phenotype”.
The phenotype of a population gives the information about the physical appearance of the individuals living in that population which does not represent the genetic description a population. Hence, option (a) is incorrect.
Option (c) is given as “genetic drift”.
Genetic drift can be described as a random change in the frequency of allele of a small population which does not represent the genetic description of the population. Hence, option (c) is incorrect.
Option (d) is given as “founder effect”.
The founder effect is also a genetic drift which occurs when a new area is colonized by a small population. Hence, option (d) is incorrect.
Option (e) is given as “changes in allele frequency”.
The change in allele frequency describes only about the genetic variation within the population, but do not give all the genetic description of a population. Hence, option (e) is incorrect.
Hence, options (a), (c), (d), and (e) are incorrect.
Gene pool represents the genetic description of a population.
Want to see more full solutions like this?
Chapter 19 Solutions
Biology (MindTap Course List)
- Traits that are inherited and improve an individual’s ability to survive and reproduce are called traits. (a) adaptive (b) polymorphic (c) biological (d) sympatric (e) allopatricarrow_forwardDarwin based his Theory of Evolution by Natural Selection on series of observations. Which of the following is not associated with his theory? a) individuals in a population vary phenotypically b) organisms tend to under-reproduce themselves c) there are limited resources for which individuals compete d) some variations possessed by individuals of a population are inheritedarrow_forwardAccording to the Hardy-Weinberg law of equilibrium: Question 1 options: A) In absence of mutation and natural selection, the frequencies of the genotypes will remain stable because no evolutionary change takes place. B) In absence of gene flow, the frequencies of the genotypes will remain stable because no evolutionary change takes place. C) In absence of genetic drift, the frequencies of the genotypes will remain stable because no evolutionary change takes place. D) All of the above. E) None of the above.arrow_forward
- Which of the following is NOT an essential component of Darwin's theory of natural selection? a) natural selection results in a population that is adapted to its environment b) use or disuse of a structure causes changes that are passed onto the next generation c) more offspring are produced than the environment can support d)heritable variation exists in populationsarrow_forwardEven though Hardy and Weinburg showed that the process of random reproduction will not alter gene frequency in a population over time, in wild populations we observe that gene frequencies do change overtime so what has happened? A) sexual selection B) Evolution due to sexual selection C) none of these D) any of these E) Evolution due to genetic driftarrow_forwardAccording to Darwin’s model of evolution, evolution can only occur if there is some variation present among the individual members of a population. Which statement best describes the source of this variation among members of a species? A) individuals will vary depending on geography and climate B) variation exists because not all genes will be expressed C) variation among individuals may arise as a result of mutations in the genetic code D) variation exists because different individuals will have different access to food and other resourcesarrow_forward
- According to Darwin’s model of evolution, evolution can only occur if there is some variation present among the individual members of a population. Which statement best describes the source of this variation among members of a species? A) variation exists because different individuals will have different access to food and other resources B) individuals will vary depending on geography and climate C) variation exists because not all genes will be affected D) variation among individuals may arise as a result of mutations in the genetic codearrow_forwardAnalysis of DNA sequences for a particular locus among individuals within a population provides biologists with one way to estimate (a) genetic drift (b) genetic polymorphism (c) gene flow (d) heterozygote advantage (e) frequencydependent selectionarrow_forwardIf mutation introduces a new allele into a population, what will happen to the frequency of the original alleles over generations? (Assume all alleles are adaptive.) a) The mutant allele will eventually be lost from the population. O b) Frequency of the original alleles will remain the same. c) Frequency of the original alleles will decrease. d) Frequency of the original alleles will increase.arrow_forward
- Considered synonymous with migration, the movement of alleles from one population to another is referred to as: A) genetic drift B) mutation C) natural selection D) gene flowarrow_forwardThe Hardy–Weinberg principle may be applicable if (a) the population size is small (b) migration occurs only at the beginning of the breeding season (c) mutations occur at a constant rate (d) matings occur exclusively between individuals of the same genotype (e) natural selection does not occurarrow_forwardNatural selection occurs only if there is both (1) variation in the genetic information between organisms in a population and (2) variation in the expression of that genetic information—that is, trait variation—that leads to differences in performance among individuals. What kind of variation might exist in bioluminescing organisms, and what differences in performance might result? (Remember, evolution is a consequence of the interaction of four factors: (1) the potential for a species to increase in number, (2) the genetic variation of individuals in a species due to mutation and sexual reproduction, (3) competition for an environment’s limited supply of the resources that individuals need in order to survive and reproduce, and (4) the ensuing proliferation of those organisms that are better able to survive and reproduce in that environment.)arrow_forward
- Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSONBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStaxAnatomy & PhysiologyBiologyISBN:9781259398629Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa StouterPublisher:Mcgraw Hill Education,
- Molecular Biology of the Cell (Sixth Edition)BiologyISBN:9780815344322Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter WalterPublisher:W. W. Norton & CompanyLaboratory Manual For Human Anatomy & PhysiologyBiologyISBN:9781260159363Author:Martin, Terry R., Prentice-craver, CynthiaPublisher:McGraw-Hill Publishing Co.Inquiry Into Life (16th Edition)BiologyISBN:9781260231700Author:Sylvia S. Mader, Michael WindelspechtPublisher:McGraw Hill Education