Which type of genotypic selection leads to a stable equilibrium of polymorphism at a locus? Select...
Which type of genotypic selection leads to a stable equilibrium of polymorphism at a locus?
Select one:
a. Heterozygote Disadvantage (Underdominance)
b. Heterozygote Advantage (Overdominance)
c. Stabilizing Selection
d. Positive selection
e. Directional Selection
Homework Answers
a. Heterozygote Disadvantage (Underdominance)
Heterozygote disadvantage (underdominance) and positive frequency-dependent selection can act at a locus, but neither maintains multiple alleles in a population.
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Which type of genotypic selection leads to a stable equilibrium
of polymorphism at a locus?
Select...
Both negative-frequency dependent selection and heterozygote advantage can lead to a stable polymorphism. Answer the following...
Both negative-frequency dependent selection and heterozygote advantage can lead to a stable polymorphism. Answer the following questions. A) Of the two mechanisms, which is guaranteed to produce a stable polymorphic equilibrium? Which is not? Explain. (A polymorphic equilibrium is one in which both alleles are present). B) Of the two mechanisms, which could apply to bacteria? Which could not?
Heterozygote advantage: Group of answer choices A. Has an stable equilibrium determined by the allele frequencies....
Heterozygote advantage: Group of answer choices A. Has an stable equilibrium determined by the allele frequencies. B. Has an stable equilibrium determined by the genotypic frequencies. C. Has an stable equilibrium determined by the selection coefficients. D. Can maintain multiple stable equilibria simultaneously.
37.E Coli evolve rapidly via natural selection. Specifically, which of the 3 steps of natural selection...
37.E Coli evolve rapidly via natural selection. Specifically, which of the 3 steps of natural selection accounts for small mutations improving efficiency, ultimately allowing E. Coll to eat citrate? a. Potentiation b. Acclimation c. Actualization d. Refinemente. Rearrangement 38. Pocket mice with different coat colors living in 2 distinct habitats in the Sonoran Desert are an example of which type of natural selection? a. Directional b. Stabilizing c. Disrupting d. Correlating e. None of the above 39. Explain how natural...
Of the following evolutionary forces; crossing over, directional selection, mutation, speciation, stabilizing selection, sex, gene flow...
Of the following evolutionary forces; crossing over, directional selection, mutation, speciation, stabilizing selection, sex, gene flow and genetic drift which promote or maintain genetic variation within a population? a) crossing over only b) directional selection and sex c) directional selection, mutation, and speciation d) crossing over, mutation, sex, and gene flow e) only sex Of the following evolutionary forces, crossing over, directional selection, mutation, speciation, stabilizing selection, sex, gene flow and genetic drift which promote genetic differentiation (divergence) among populations?...
What type of Selection? Number of cacti A. Artificial B. Directional C. Stabilizing D. Disruptive 70...
What type of Selection? Number of cacti A. Artificial B. Directional C. Stabilizing D. Disruptive 70 80 90 100 110 120 130 Number of spines
16. Which mode of natural selection is demonstrated by the Ginkgo tree today remaining essentially similar...
16. Which mode of natural selection is demonstrated by the Ginkgo tree today remaining essentially similar morphology since the Mesozoic era? a. stabilizing b. directional c. diversifying d. sexual e. artificial 17. Which scenario will demonstrate disruptive (diversifying) selection? a. There is heterozygote advantage (heterozygous individuals have the highest fitness). b. Female flies collect sperm from different males in her sperm bag. c. Individuals with intermediate phenotype are inferior competitors against homozygous individuals d. Insects become resistant to the most...
In the gene pool of a population with 132 individuals, a fixed allele for a particular...
In the gene pool of a population with 132 individuals, a fixed allele for a particular genetic locus has a frequency of Select one: O a. 1 O b. More information is needed to determine this. O c. 0.75 O d.o O e. 0.5 Which of the following does not have the ability to alter allele frequencies? Select one: O a. gene flow O b. inbreeding O c. genetic drift O d. natural selection O e. All of these have...
One selective force (or mixture of forces) limits the largest viable birth weight of a human...
One selective force (or mixture of forces) limits the largest viable birth weight of a human baby, while another selective force limits the smallest viable birth weight of a baby. This is called .............. natural selection. a. Artificial b. Fictional c. Directional d. Disruptive e. Stabilizing A population splits into two rather different populations. The two phenotypic extremes of the original population are favored over the more common central phenotype of the original population. This is called ............ natural selection....
Select the statements that accurately describe the effect of natural selection on genetic equilibrium: a. It...
Select the statements that accurately describe the effect of natural selection on genetic equilibrium: a. It can cause allele frequencies in a population to be in genetic equilibrium. b. It can cause a dominant allele for a gene to become more abundant in a population. c. It can cause an allele to become more abundant in a population if it provides a fitness advantage over other alleles for that trait. d. It is an evolutionary force that prevents natural populations...
balancing selection Which of the following is an incorrect statement about balancing selection? A. Regardless of...
balancing selection
Which of the following is an incorrect statement about balancing selection? A. Regardless of the initial frequency of an allele, its frequency will eventually reach the same equilibrium frequency under balancing selection B. Balancing selection can maintain genetic variation even when mutation is absent. C. For a biallelic locus with alleles A1 and A2, balancing selection occurs when genotype A1A2 has the highest fitness. D. Balancing selection could occur at a locus on the Y chromosome
37.E Coli evolve rapidly via natural selection. Specifically, which of the 3 steps of natural selection accounts for small mutations improving efficiency, ultimately allowing E. Coll to eat citrate? a. Potentiation b. Acclimation c. Actualization d. Refinemente. Rearrangement 38. Pocket mice with different coat colors living in 2 distinct habitats in the Sonoran Desert are an example of which type of natural selection? a. Directional b. Stabilizing c. Disrupting d. Correlating e. None of the above 39. Explain how natural...
What type of Selection? Number of cacti A. Artificial B. Directional C. Stabilizing D. Disruptive 70 80 90 100 110 120 130 Number of spines
16. Which mode of natural selection is demonstrated by the Ginkgo tree today remaining essentially similar morphology since the Mesozoic era? a. stabilizing b. directional c. diversifying d. sexual e. artificial 17. Which scenario will demonstrate disruptive (diversifying) selection? a. There is heterozygote advantage (heterozygous individuals have the highest fitness). b. Female flies collect sperm from different males in her sperm bag. c. Individuals with intermediate phenotype are inferior competitors against homozygous individuals d. Insects become resistant to the most...
In the gene pool of a population with 132 individuals, a fixed allele for a particular genetic locus has a frequency of Select one: O a. 1 O b. More information is needed to determine this. O c. 0.75 O d.o O e. 0.5 Which of the following does not have the ability to alter allele frequencies? Select one: O a. gene flow O b. inbreeding O c. genetic drift O d. natural selection O e. All of these have...
balancing selection
Which of the following is an incorrect statement about balancing selection? A. Regardless of the initial frequency of an allele, its frequency will eventually reach the same equilibrium frequency under balancing selection B. Balancing selection can maintain genetic variation even when mutation is absent. C. For a biallelic locus with alleles A1 and A2, balancing selection occurs when genotype A1A2 has the highest fitness. D. Balancing selection could occur at a locus on the Y chromosome
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