In lab you are going to be using drosophila flies with sepia mutations (SE, se) causing...

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Biology

In lab you are going to be using drosophila flies with sepiamutations (SE, se) causing brown eyes found on chromosome 3 andapterous mutation (AP, ap) on chromosome 2 causing loss of wings.These are recessive mutations. Red eye is the wild-type phenotype.Assuming you have a female heterozygous at both loci. Draw thechromosomes as they go through meiosis (Make sure you show somaticcell, prophase I, metaphase I, metaphase II, gametes.) Draw allpossible gametes. What percentage of each phenotype do you expect?What are all the possible phenotypes and genotypes would youexpect? This female mates with a male that is also heterozygous atboth loci and they have 1000 progeny.
1. What are all possible phenotypes you could recover?
A. Red eyes and wings OR Red eyes and no wings
B. Red eyes and wings OR Brown eyes and no wings
C. Red eyes and wings OR Brown eyes and wings
D. Red eyes and wings OR Brown eyes and wings OR Red eyes and nowings
E. Red eyes and wings OR Brown eyes and wings OR Red eyes and nowings OR Brown eyes AND no wings
2. What combination of phenotypes is displayedthe most?
A. Red eyes and wings
B. Red eyes and no wings
C. Brown eyes and wings
D. Brown eyes and no wings
3. Out of 1000 progeny how many animals would have the mostcommon combination of phenotypes?
Numeric Answer:
4. What combination of phenotypes is displayed the least?
A. Red eyes and wings
B. Red eyes and no wings
C. Brown eyes and wings
D. Brown eyes and no wings
5. Out of 1000 progeny how many animals would have the leastcommon combination of phenotypes?
Numeric Answer:
6. What is the least probable genotype?
A. SE/se; AP/ap
B. se/se; ap/ap
C. SE/SE; AP/AP
D. SE/se; AP/AP
E. SE/se; ap/ap
7. What is the second least probable genotype?
A. SE/se; AP/ap
B. se/se; ap/ap
C. SE/SE; AP/AP
D. SE/se; AP/AP
E. SE/se; ap/ap
8. What percent of progeny will have the most commongenotype?
A. 6.25
B. 12.5
C. 18.75
D. 25
E. None of the Above
9. You find a Red eye fly with wings. What is the probabilitythis fly is homozygous SE/SE?
Word Answer:
10. You find a Red eye fly with wings. What animal could youcross this animal to, in order determine if its homozygous orheterozygous at the SE locus.
A. A Red eyed fly with wings
B. A Red eye fly with or without wings
C. A heterozygous Red eye fly with or without wings
D. A homozygous Red eye fly with or without wings
E. A brown eye fly with or without wings
11. What is the probability that this fly in male?
Word Answer:

Answer & Explanation Solved by verified expert

4.2 Ratings (654 Votes)

Draw all possible gametesThe genotype of this female would be SEse APapPhenotype of this female Red eyes wingedThe possible gametes would beMating of the heterozygous female fly with heterozygous male flywill result in See Answer

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