problem set 2-Problem set 2.pdf Chegg Study Guided Solution × + × 4of 8 f Facebo
ID: 204762 • Letter: P
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problem set 2-Problem set 2.pdf Chegg Study Guided Solution × + × 4of 8 f Facebook https://uoit bbcswebdav/pid-1047741-dt-content-rid-6334328_1/courses/20180 a Search - + Automatic Zoom 5. (5) You are working with a farmer who has two varieties of true-breeding corn plants The Durham variety has dominant alleles for short stature (S), yellow leaf colour (Y) and crinkled leaves (C). The UOIT variety has the recessive alleles for all three genes; tall stature (s), green leaf colour (y), and smooth leaves (c). The farmer has mapped the genes and tells you that they are linked as shown below: 7 m.u 18 m.u The farmer has produced an F1 hybrid between the two varieties and has backcrossed this to the UOIT variety. Assuming that there is no interference, he wants you to tell him: a. The proportion of the backcrossed progeny that will be phenotypically identical to the b. The proportion of the backcrossed progeny that will be phenotypically identical to the C. The proportion of the backcrossed progeny that will have the stature and leaf texture of d. The proportion of the backcrossed offspring that will have the stature and leaf colour of Durham variety for all three traits UOIT variety for all three traits Durham variety but the leaf colour of the UOIT variety Durham variety but the leaf texture of the UOIT variety 12:34 AM O Type here to search f ^4x ENG 2018-02-28Explanation / Answer
Ans.
let, the total no. of offsprings are 1000. then no. of recombinant offsprings produced by single crossover between S and Y are 70 and no. of recombinant offsprings produced by single crossover between Y and C are 180.
so, SCO frequency = 70/1000 = .07 and 180/1000= .180,
as interferance is zero, so DCO frequency is = .07*.180= .0126. which means there are 12.6 recombinant offsprings produced by double crossover out of 1000 and rest are parental type (1000- (70+180+12.6)).
SYC - 368.7
syc - 368.7
SyC- 6.3
sYc- 6.3
Syc- 35
sYC- 35
SYc- 90
syC- 90
a) 36.87 %
b) 36.87 %
c) 9%
d) 0.63 %
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