HERE IS TEXT FROM IMAGES: You are investigating two traits in fruit flies contro
ID: 275051 • Letter: H
Question
HERE IS TEXT FROM IMAGES:
You are investigating two traits in fruit flies controlled by one gene each. The b gene controls for body color (black or brown), while the r gene controls for body sculpture (rugose or smooth). After crossing rugose black flies with smooth brown flies, you obtain an F1 generation of 100% smooth black flies.
What are the dominant alleles? (1 pt)
What are the genotypes of the two parent flies to perform a dihybrid test cross? (1 pt)
After running a dihybrid test cross, you find 1000 offspring with the following phenotypes:
Fill in the expected column with the expected number of offspring in each class of phenotypes. (1 pt)
What phenotype classes represent the recombinant offspring? (1 pt each)
Calculate the relative genetic distance between the body color gene and the body sculpting gene (show your work). (1 pt).
I) (Protected View) Word Calculate the relative genetic distance between the body color gene and the body sculpting gene (show your work). (1 pt) You are investigating two traits in fruit flies controlled by one gene each. The b gene controls for body color (black or brown), while the rgene controls for body sculpture (rugose or smooth). After crossing rugose back flies with smooth brown flies, you obtain an F1 generation of 100% smooth black flies. What are the dominant alleles? (1 pt) What are the genotypes of the two parent flies to perform a dihybrid test cross? (1 pt) Please save your file as Last name_First nameRec5 (so my file would be saved as Yanagisawa_Seiga_Rec5) After running a dihybrid test cross, you find 1000 offspring with the following phenotypes: End of document Phenotypc Black, rugose Black, smooth Brown, rugose Brown, smooth Observed 406 86 94 414 1000 Expected Fill in the expected column with the expected number of offspring in each class of phenotypes. (1pt) What phenotype classes represent the recombinant offspring? (1 pt each) SCREENS 1-2 OF 2 ???? + 100%Explanation / Answer
1) F1 generation of 100% smooth black flies.
the dominant alleles are Black and Smooth.
2) the parent genotypes are- Black, Rugose and Brown, Smooth.
3)
the ratio of dihybrid test cross is 1 :1 :1 :1.
4) Black, Smooth and Brown, Rugose are the recombinant types.
5) genetic distance between the body color gene and the body sculpting gene
= (86+94 / 1000)*100 = (180/1000)*100 = 18 map unit.
bs BS BbSs Bs Bbss bS bbSs bs bbssRelated Questions
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