According to Fisher's geometric model: a. All mutations are random b. All mutations are neutral c....
According to Fisher's geometric model:
| a. |
All mutations are random |
|
| b. |
All mutations are neutral |
|
| c. |
Mutations of large effect are more likely to be beneficial than mutations of small effect |
|
| d. |
Mutations of small effect are more likely to be beneficial than mutations of large effect |
|
| e. |
Deleterious mutations do not occur in populations |
Homework Answers
Answer:
d. Mutations of small effect are more likely to be beneficial than mutations of large effect
Fisher noted & explained that the smaller the effect, the higher the chance that a change is beneficial.
Add Answer to:
According to Fisher's geometric model:
a.
All mutations are random
b.
All mutations are neutral
c....
If most mutations are not strictly neutral but rather slightly deleterious, which of the following will...
If most mutations are not strictly neutral but rather slightly deleterious, which of the following will be a consequence (select all that apply) A. A larger population will result in a smaller effectively neutral mutation rate. O O B. Molecular clocks will tick more accurately when measured in substitutions per year rather than substitutions per generation. C. The level of polymorphism in natural populations could be explained by balancing selection. D. Even very large populations will have heterozygosities less than...
1. Genetic drift is an important mechanism for maintaining genetic variation in populations. True False 2....
1. Genetic drift is an important mechanism for maintaining genetic variation in populations. True False 2. According to several studies (e.g., bacteriophage f1), most mutation are _______. A. lethal B. deleterious but not lethal C. approximately neutral D. beneficial 3. Most mutations occur in response to the adaptive needs of the organism. True False Can please answer all 3 questions ASAP. Thank you in advance!
Which mutation is most likely to become fixed? a. A neutral or nearly neutral mutation in...
Which mutation is most likely to become fixed? a. A neutral or nearly neutral mutation in an extremely large population b. A beneficial mutation in an extremely large population c. A neutral or nearly neutral mutation in an extremely small population d. A beneficial mutation in an extremely small population
characteristic that tends to affect the probability of trade existing 6) According to the gravity model, a characteri b...
characteristic that tends to affect the probability of trade existing 6) According to the gravity model, a characteri between any two countries is A) their cultural affinity. B) the average weight/value of their traded goods. C) their colonial-historical ties. D) the distance between them. E) the number of different product varieties produ of different product varieties produced by their industries. 7) Why does the gravity model work? A) Large economies became large because they wer B) Large economies have relatively...
According to the research on North American bird, the bird populations have shown that populations are
According to the research on North American bird, the bird populations have shown that populations are _______ distributed on a _______ scale A clumped; small B. random; small C. regular; smallD. regular; large E. clumped; large
Question 18 1 pts The figure shows the effect of late-acting and early-acting deleterious mutations on...
Question 18 1 pts The figure shows the effect of late-acting and early-acting deleterious mutations on survivorship curves. What do the differences in these curves mean for the evolution of senescence? A Late-acting mutation B Early-acting mutation C Comparison of survworship curves is decreased decreased from day 160 10 day 180 by Indviduels with 07 Time days Time days Click to view larger image. Selection acts more strongly on early-acting mutations, which are less likely to get eliminated from the...
22. Few or small mutations in throughout the history of life. may explain the occurrence of...
22. Few or small mutations in throughout the history of life. may explain the occurrence of great phenotype changes a. developmental genes b. recessive alleles e dominant alleles de structural genes 23. Which is the most parsimonious and hence, most probable expl a. Multiple simultaneous beneficial mutations transton monious and, hence, most probable explanation for the evolution of flight in birds? resources previously not available to them. inicous beneficial mutations transformed front legs into wings, allowing them access to new...
Read just the long paragraph below and explain in your words the hypothesized evolutionary processes (note,...
Read just the long paragraph below and explain in your words the hypothesized evolutionary processes (note, more than one are in play) proposed to remove slightly deleterious alleles from the gene pool. Keep in mind the importance about balance between mutation rates and the consequences to individual fitness. "At first sight, it appears paradoxical that nearly neutral mutations in essential immune genes will be efficiently removed from the species’ gene pool despite having no easily discernible impact on the immune...
27. Beneficial mutations can: Select all that apply. protect from disease. permit an organism to become...
27. Beneficial mutations can: Select all that apply. protect from disease. permit an organism to become adapted to its environment. None of the other answer options is correct. never be reversed. 28. With regard to alleles that encode different forms of (beta)-globin in humans and their relation to malaria, which answer choices are examples of phenotypes? Select all that apply. sickle-cell anemia A4, AS, SS susceptibility to malaria altele C sickled red blood cells 29. An individual is heterozygous for...
Value: 15 According to the information provided in the weblinks above, which of the following mutations...
Value: 15 According to the information provided in the weblinks above, which of the following mutations would have been negatively selected for in populations of andeans living at low altitudes? ("Upregulation" means more production of the gene's product.) a. a gene that codes for the starch digestion enzyme MGAM b. a mutation in the gene which codes for an immune receptor (CD83) and results in upregulation (more production of the receptor) c. a mutation in the JAK2 gene which upregulates...
If most mutations are not strictly neutral but rather slightly deleterious, which of the following will be a consequence (select all that apply) A. A larger population will result in a smaller effectively neutral mutation rate. O O B. Molecular clocks will tick more accurately when measured in substitutions per year rather than substitutions per generation. C. The level of polymorphism in natural populations could be explained by balancing selection. D. Even very large populations will have heterozygosities less than...
characteristic that tends to affect the probability of trade existing 6) According to the gravity model, a characteri between any two countries is A) their cultural affinity. B) the average weight/value of their traded goods. C) their colonial-historical ties. D) the distance between them. E) the number of different product varieties produ of different product varieties produced by their industries. 7) Why does the gravity model work? A) Large economies became large because they wer B) Large economies have relatively...
Question 18 1 pts The figure shows the effect of late-acting and early-acting deleterious mutations on survivorship curves. What do the differences in these curves mean for the evolution of senescence? A Late-acting mutation B Early-acting mutation C Comparison of survworship curves is decreased decreased from day 160 10 day 180 by Indviduels with 07 Time days Time days Click to view larger image. Selection acts more strongly on early-acting mutations, which are less likely to get eliminated from the...
22. Few or small mutations in throughout the history of life. may explain the occurrence of great phenotype changes a. developmental genes b. recessive alleles e dominant alleles de structural genes 23. Which is the most parsimonious and hence, most probable expl a. Multiple simultaneous beneficial mutations transton monious and, hence, most probable explanation for the evolution of flight in birds? resources previously not available to them. inicous beneficial mutations transformed front legs into wings, allowing them access to new...
27. Beneficial mutations can: Select all that apply. protect from disease. permit an organism to become adapted to its environment. None of the other answer options is correct. never be reversed. 28. With regard to alleles that encode different forms of (beta)-globin in humans and their relation to malaria, which answer choices are examples of phenotypes? Select all that apply. sickle-cell anemia A4, AS, SS susceptibility to malaria altele C sickled red blood cells 29. An individual is heterozygous for...
Value: 15 According to the information provided in the weblinks above, which of the following mutations would have been negatively selected for in populations of andeans living at low altitudes? ("Upregulation" means more production of the gene's product.) a. a gene that codes for the starch digestion enzyme MGAM b. a mutation in the gene which codes for an immune receptor (CD83) and results in upregulation (more production of the receptor) c. a mutation in the JAK2 gene which upregulates...
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