Can someone please help me with the following questions. Pleaseprovide an answer/explanation especially for the first three.
?. Suppose a population of flour beetles has 1,000 individuals.Normally the beetles are red; however, this population ispolymorphic for a mutant autosomal body color, black, designated bybb. Red is dominant to black, so BB and Bb genotypes are red.Assume the population is at HardyâWeinberg equilibrium, with equalfrequencies of the two alleles. What would be the allelefrequencies if a population bottleneck occurred and only fourindividuals survived: one female red heterozygote and three blackmales? A) 0.125 red; 0.875 black B)0.875 red; 0.125 black C) 0.25 red;0.75 black D) 0.75 red; 0.25 black E) 0.5 red;0.5 black
?. What would be the expected frequencies of the red and blackphenotypes in the original population of beetles? A) 0.5 red; 0.5black B) 0.75 red; 0.25 black C) 0.25 red; 0.75black D) All red E) Insufficient information is given to answer thequestion.
?. Given the original population data and a Hardy-Weinbergequilibrium, what are the frequencies of the homozygous dominant,heterozygous, and homozygous recessive (in that order) after 100generations, assuming that no selection or other evolutionaryprocesses are operating? A) 0.25;0.5; 0.25 B) 0.75; 0.20; 0.05 C) 0; 0.5; 0.5 D.) 0; 0; 1 E) None ofthe above
?. The chart below shows the performance of different genotypesat the A locus for three different populations of lizards in twodifferent environments. The first number is their running speed (inm/s) and the second is their relative strength. In which populationis there evidence of a trade-off between running speed and relativestrength? A) Population 1 B) Population 2 C) Population 3 D) Both aand b E) None of the above
Population
1 (AA) 6.2/10 (Aa)7.6/12 (aa)8.2/15
2 (AA)5.1/18 (Aa)6.2/11 (aa)7.4/8
3 (AA)6.9/14 (Aa)6.5/11 (aa)4.7/9
?. The half-life of carbon-14 is 5,700 years. If 10 percent ofthe original carbon-14 is left in a structure, that structure is_______ years old. A ) less than2,850 B) about 5,700 C) between 11,400 and17,100 D) between 17,100 and 22,800 E)about 57,000
?. Which is the best way to estimate the length of time that twospecies have been separated evolutionarily? A) compare pieces ofDNA coding for a structural protein that is present in both speciesB) studying the many nucleotide sites in both species and taking anaverage differences between DNA and RNA C) comparing pieces of DNAfor a functional enzyme that is present in both species D)comparing the DNA differences between two species in non-codingregions E) Comparing fitness levels
?. Incomplete dominance could be considered as supportingevidence for A) Fleming Jenkins blending hypothesis argument B)Alfred Wallaceâs theory of Biogeography C) Darwinâs theory ofNatural Selection D) Cuvierâs catastrophe hypothesis E) None of theabove.
?. Penicllium is a mold that grows on bread. It producespenicillin, a toxin which destroys or inhibits bacteria and otherfungi from growing on the bread. This is best labelled A)commensalism B) amensalism C) neutralism D) obligate mutualism C)contest competition
Can someone please help me with the following questions. Pleaseprovide an answer/explanation especially for the first three.
?. Suppose a population of flour beetles has 1,000 individuals.Normally the beetles are red; however, this population ispolymorphic for a mutant autosomal body color, black, designated bybb. Red is dominant to black, so BB and Bb genotypes are red.Assume the population is at HardyâWeinberg equilibrium, with equalfrequencies of the two alleles. What would be the allelefrequencies if a population bottleneck occurred and only fourindividuals survived: one female red heterozygote and three blackmales? A) 0.125 red; 0.875 black B)0.875 red; 0.125 black C) 0.25 red;0.75 black D) 0.75 red; 0.25 black E) 0.5 red;0.5 black
?. What would be the expected frequencies of the red and blackphenotypes in the original population of beetles? A) 0.5 red; 0.5black B) 0.75 red; 0.25 black C) 0.25 red; 0.75black D) All red E) Insufficient information is given to answer thequestion.
?. Given the original population data and a Hardy-Weinbergequilibrium, what are the frequencies of the homozygous dominant,heterozygous, and homozygous recessive (in that order) after 100generations, assuming that no selection or other evolutionaryprocesses are operating? A) 0.25;0.5; 0.25 B) 0.75; 0.20; 0.05 C) 0; 0.5; 0.5 D.) 0; 0; 1 E) None ofthe above
?. The chart below shows the performance of different genotypesat the A locus for three different populations of lizards in twodifferent environments. The first number is their running speed (inm/s) and the second is their relative strength. In which populationis there evidence of a trade-off between running speed and relativestrength? A) Population 1 B) Population 2 C) Population 3 D) Both aand b E) None of the above
Population
1 (AA) 6.2/10 (Aa)7.6/12 (aa)8.2/15
2 (AA)5.1/18 (Aa)6.2/11 (aa)7.4/8
3 (AA)6.9/14 (Aa)6.5/11 (aa)4.7/9
?. The half-life of carbon-14 is 5,700 years. If 10 percent ofthe original carbon-14 is left in a structure, that structure is_______ years old. A ) less than2,850 B) about 5,700 C) between 11,400 and17,100 D) between 17,100 and 22,800 E)about 57,000
?. Which is the best way to estimate the length of time that twospecies have been separated evolutionarily? A) compare pieces ofDNA coding for a structural protein that is present in both speciesB) studying the many nucleotide sites in both species and taking anaverage differences between DNA and RNA C) comparing pieces of DNAfor a functional enzyme that is present in both species D)comparing the DNA differences between two species in non-codingregions E) Comparing fitness levels
?. Incomplete dominance could be considered as supportingevidence for A) Fleming Jenkins blending hypothesis argument B)Alfred Wallaceâs theory of Biogeography C) Darwinâs theory ofNatural Selection D) Cuvierâs catastrophe hypothesis E) None of theabove.
?. Penicllium is a mold that grows on bread. It producespenicillin, a toxin which destroys or inhibits bacteria and otherfungi from growing on the bread. This is best labelled A)commensalism B) amensalism C) neutralism D) obligate mutualism C)contest competition
Related textbook solutions
Related questions
14A. Suppose a population of flour beetles has 10,000 individuals. There are two alleles possible for the gene that determines body color: red (B), and black (b). BB and Bb beetles are red, while bb individuals are black. Assume the population is at HardyâWeinberg equilibrium, with equal frequencies of the two alleles.
What would be the expected frequency of red beetles?
14B. What would be the expected frequency of black beetles in the population as described in A?
14C. Assuming that Hardy-Weinberg equilibrium remains in effect, what would be the expected frequencies of BB, Bb, and bb individuals after 100 generations?
| BB = 0.5, bb = 0.5 |
| Bb = 0.75 bb = 0.25 |
| BB = 0.75 bb = 0.25 |
| BB = 0.25, Bb = 0.5, bb = 0.25 |
| The answer cannot be determined. |
14D. What would be the expected red (B) allele frequency if 10,000 black individuals migrated into the population?
14E. What would be the expected black (b) allele frequency after the migration described in part D?
14F. Violation of what two Hardy-Weinberg assumptions could return the population to the original allele frequencies (described in A)? Briefly explain how each violation would return the population to the original allele frequencies in 1-2 sentences (each).
