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Question 8

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Refer to this map to answer the questions:
 Refer to this map to answer the questions:    a) What is the distance between gene E and gene F? b) Assuming I = 0, what is the probability of no crossovers between gene D and gene E? c) Assuming I = 0, what is the probability of no crossovers between gene E and gene F? d) Considering both gene pairs, what is the proportion of nonrecombinant gametes? e) What is the predicted frequency of each parental gamete (DEF/def )? f) What is the recombination frequency between gene D and gene E? g) What is the recombination frequency between gene E and gene F? h) What is the frequency of two single recombinant gametes between genes D and E? i) What is the frequency of two single recombinant gametes between genes E and F? j) What is the frequency of each of the double- recombinant gametes, DeF and dEf? k) Fill in the blanks below to prove that the sum of the frequencies of the eight predicted gamete genotypes is e 1.0:   \overline { D E F } ^ { + } + \frac { } { d e f } + \frac { } { D e f } +\frac { } { d E F } +\frac { } { D E f } + \frac { }{ d e F } +\frac { } { D e F } + \frac { } { d E f } = 1 a) What is the distance between gene E and gene F?
b) Assuming I = 0, what is the probability of no crossovers between gene D and gene E?
c) Assuming I = 0, what is the probability of no crossovers between gene E and gene F?
d) Considering both gene pairs, what is the proportion of nonrecombinant gametes?
e) What is the predicted frequency of each parental gamete (DEF/def )?
f) What is the recombination frequency between gene D and gene E?
g) What is the recombination frequency between gene E and gene F?
h) What is the frequency of two single recombinant gametes between genes D and E?
i) What is the frequency of two single recombinant gametes between genes E and F?
j) What is the frequency of each of the double- recombinant gametes, DeF and dEf?
k) Fill in the blanks below to prove that the sum of the frequencies of the eight predicted gamete genotypes is e 1.0:
DEF++def+Def+dEF+DEf+deF+DeF+dEf=1\overline { D E F } ^ { + } + \frac { } { d e f } + \frac { } { D e f } +\frac { } { d E F } +\frac { } { D E f } + \frac { }{ d e F } +\frac { } { D e F } + \frac { } { d E f } = 1

Correct Answer:

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a) 12 m.u.
b) 92%
c) 88%
d) (0.92)(0.88)...

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