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_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_forwardWhich statement illustrates the connection between natural selection and overreproduction of a population? a) populations vary in their inherited traits. b) species produce more offspring than can survive in the environment. c) individuals with inherited traits that promote survival tend to have more surviving offspring. d) individuals with traits that do not enhance survival cannot reproduce.arrow_forward
- Which of the following is not true for natural selection to occur? a) there should be variation within the population b) individuals with some genotypes have more offspring than individuals with others c) more individuals are born than can survive d) only individuals with favored alleles survive e) variation between individuals should be explained by genetics rather than environmentarrow_forwardThe MN blood group is of interest to population geneticists because (a) people with genotype MN cannot receive blood transfusions from either MM or NN people (b) the MM, MN, and NN genotype frequencies can be observed directly and compared with calculated expected frequencies (c) the M allele is dominant to the N allele (d) people with the MN genotype exhibit frequency-dependent selection (e) people with the MN genotype exhibit heterozygote advantagearrow_forwardWhich of the following is true about natural selection? a) It always results in the evolution of new traits b) It always results in the strongest individuals surviving c) It always results in the fittest individuals reproducing d) It always results in the best-adapted individuals survivingarrow_forward
- Natural selection (a) leads to species being better adapted to their environment. (b) may lead to speciation if there is no gene flow between populations. (c) may lead to genetic divergence among populations in differing environments. (d) all of the above (e) none of the abovearrow_forwardIndicate whether each statement presents an idea of Jean-Baptiste Lamarck, of Charles Darwin, or of Both Scientistarrow_forwardHow do these diagrams support the Natural Selection doctrine?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