Please help, this quiz is due and I need to turn it in. I dont understand it so
ID: 190135 • Letter: P
Question
Please help, this quiz is due and I need to turn it in. I dont understand it so please explain also. Please answer the three parts
You have a line that is pure breeding for autosomal recessive allele a. You cross females of this line with males pure breeding for the autosomal alleles b and c to make a F1. You then testcross the F1 heterozygous females and obtain the following F2 phenotypes: 58 WT, 52 a b c, 95 a b, 105 c, 315 a, 355 b c, 9 a c, and 11 b. What are the genetic distances of the map for these three loci?
64.3 m.u. between c and a; 21 m.u. between a and b
45.1 m.u. between a and b; 30 m.u. between b and c
10.4 m.u. between b and c; 22.2 m.u. between c and a
13 m.u. between a and c; 22 m.u. between c and b
19 m.u. between a and b; 11 m.u. between b and c
40.6 m.u. between a and c; 6.7 m.u. between c and b
12 m.u. between a and c; 6.7 m.u. between c and b
20 m.u. between a and b; 12 m.u. between b and c
5.7 m.u. between b and a; 14.4 m.u. between a and c
13 m.u. between b and a; 21 m.u. between a and c
In corn, a triple heterozygote F1 was obtained carrying the mutant alleles s (shrunken), w (white aleurone), and y (waxy endosperm), all paired with their normal wild-type alleles. This triple heterozygote was testcrossed, and the progeny contained 116 shrunken, white; 4 fully wild type; 2538 shrunken; 601 shrunken, waxy; 626 white; 2708 white, waxy; 2 shrunken, white, waxy; and 113 waxy. Part B: What are the geneotypes of the double recombinant chromosomes inherited from triple het into the double recombinant individuals? (Loci are listed in alphabetical order of their symbols, swy)
s+y, +w+
swy, +++
ssy, wwy
s+y, swy
swy, swy
3.) What are the recombinant genotypes from the F1 of the following cross: WT female x bl; vg male, each from separate pure breeding stocks. vg is for the vestigial mutant; bl is for the black mutant. A comma separates gametes.
bl ; bl+, vg+ ; vg
bl+ ; bl+, vg+ ; vg+
bl+ ; vg+, bl+ ; vg+
bl+ ; vg, bl ; vg+
bl+ ; vg+, bl ; vg
bl+ ; vg, bl+ ; vg+
bl+ ; vg+, bl ; vg+
bl; bl+ , bl+; vg, vg; vg+ , vg+; bl
bl/ bl+ , bl+/ vg, vg/ vg+ , vg+/ bl
bl; bl , bl+; bl+, vg; vg , vg+; vg+
bl/ bl+ , bl/ bl+, vg/ vg+ , vg/ vg+
bl; vg , bl; vg+, bl+; vg , bl+; vg+
bl/ vg , bl/ vg+, bl+/ vg , bl+/ vg+
bl; vg , bl+; vg+, bl; vg , bl+; vg+
bl ; bl+, vg+ ; vg
bl+ ; bl+, vg+ ; vg+
bl+ ; vg+, bl+ ; vg+
bl+ ; vg, bl ; vg+
bl+ ; vg+, bl ; vg
bl+ ; vg, bl+ ; vg+
bl+ ; vg+, bl ; vg+
bl; bl+ , bl+; vg, vg; vg+ , vg+; bl
bl/ bl+ , bl+/ vg, vg/ vg+ , vg+/ bl
bl; bl , bl+; bl+, vg; vg , vg+; vg+
bl/ bl+ , bl/ bl+, vg/ vg+ , vg/ vg+
bl; vg , bl; vg+, bl+; vg , bl+; vg+
bl/ vg , bl/ vg+, bl+/ vg , bl+/ vg+
bl; vg , bl+; vg+, bl; vg , bl+; vg+
Explanation / Answer
1) the correct option is option 40.6 am between a and c and 6.7 a.m between c and b
2)the correct option is ssy and wwy..
3) the correct option is option bl/bl(+), bl(+) /vg, vg/vg(+), vg(+) /bl