F1 results
Cross A: white eyed male + wild type red female Males red eyes 132
Females red eyes 135
Males white eyes 0
Females white eyes 0 F1 class results
Cross B: wild type red eyed male + white eyed female Males red eyes 0
Females red eyes 110
Males white eyes 105
Females white eyes 0 F2 results Cross A
Females red eyes 295 Males red eyes 150 Males white eyes 147 Female white eyes 0 F2 class results Cross B
Female red eyes 101 Female white eyes 95 Male red eyes 99 Male white eyes 93 2. Using “+” to indicate the wildtype red-eyed allele and “w” to indicate the mutant white-eyed allele, state the genotypes of the following:
a) Wildtype red-eyed and white-eyed parental flies from cross A and cross B.
b) Males and females from the F1 generation flies from cross A and cross B. c) Males and females, F2 generation flies from cross A and cross B. 3. Draw Punnett squares to show the ratios expected in the experiment for a) Parental to F1 generation for cross A and cross B.
b) F1 to F2 generation for cross A and cross B Note: There should be a total of 4 Punnett squares and they should show both the genotype AND phenotype. 4. Carry out a suitable statistical test on the whole class results of F2 for both cross A and cross B, using gender and eye color. Answer should include: a null hypothesis
degrees of freedom
level of significance
observed and expected numbers of flies The critical value (from a statistical table) Show all of the steps clearly.
State whether you should accept or reject the null hypothesis.
State your conclusion and how this relates to the genetic basis of white eyes. Include a brief discussion of the results with relevant references.
F1 results Cross A: white eyed male + wild type red female Males red eyes 132 Females red eyes 135 Males white eyes 0 Females white eyes 0 F1 class results Cross B: wild type red eyed male + white eyed female Males red eyes 0 Females red eyes 110 Males white eyes 105 Females white eyes 0 F2 results Cross A Females red eyes 295 Males red eyes 150 Males white eyes 147 Female white eyes 0 F2 class results Cross B Female red eyes 101 Female white eyes 95 Male red eyes 99 Male white eyes 93 2. Using “+” to indicate the wildtype red-eyed allele and “w” to indicate the mutant white-eyed allele, state the genotypes of the following: a) Wildtype red-eyed and white-eyed parental flies from cross A and cross B. b) Males and females from the F1 generation flies from cross A and cross B. c) Males and females, F2 generation flies from cross A and cross B. 3. Draw Punnett squares to show the ratios expected in the experiment for a) Parental to F1 generation for cross A and cross B. b) F1 to F2 generation for cross A and cross B Note: There should be a total of 4 Punnett squares and they should show both the genotype AND phenotype. 4. Carry out a suitable statistical test on the whole class results of F2 for both cross A and cross B, using gender and eye color. Answer should include: a null hypothesis degrees of freedom level of significance observed and expected numbers of flies The critical value (from a statistical table) Show all of the steps clearly. State whether you should accept or reject the null hypothesis. State your conclusion and how this relates to the genetic basis of white eyes. Include a brief discussion of the results with relevant references.
Chapter5: What Is In A Name
Section: Chapter Questions
Problem 18MC
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answer the questions using this data.
F1 results
Cross A: white eyed male + wild type red female Males red eyes 132
Females red eyes 135
Males white eyes 0
Females white eyes 0
F1 class results
Cross B: wild type red eyed male + white eyed female Males red eyes 0
Females red eyes 110
Males white eyes 105
Females white eyes 0
F2 results Cross A
Females red eyes 295 Males red eyes 150 Males white eyes 147 Female white eyes 0
F2 class results Cross B
Female red eyes 101 Female white eyes 95 Male red eyes 99 Male white eyes 93
2. Using “+” to indicate the wildtype red-eyed allele and “w” to indicate the mutant white-eyed allele, state the genotypes of the following:
a) Wildtype red-eyed and white-eyed parental flies from cross A and cross B.
b) Males and females from the F1 generation flies from cross A and cross B.
c) Males and females, F2 generation flies from cross A and cross B.
3. Draw Punnett squares to show the ratios expected in the experiment for a) Parental to F1 generation for cross A and cross B.
b) F1 to F2 generation for cross A and cross B
Note: There should be a total of 4 Punnett squares and they should show both the genotype AND phenotype .
4. Carry out a suitable statistical test on the whole class results of F2 for both cross A and cross B, using gender and eye color. Answer should include:
a null hypothesis
degrees of freedom
level of significance
observed and expected numbers of flies The critical value (from a statistical table)
Show all of the steps clearly.
State whether you should accept or reject the null hypothesis.
State your conclusion and how this relates to the genetic basis of white eyes. Include a brief discussion of the results with relevant references.
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