Question

FATE 2019
Q.20
Zoology (XL-T)
A genetic cross was made between homozygous wild-type males (atatb*btet ct) and triple-
mutant females (aabbcc) of Drosophila melanogaster. Then the Fı males (atab+bc*c) were
back crossed to the triple-mutant females which resulted in the following F2 progenies:
atbc
abc
abc
a+b+c
abct
a+b+c+
a+bc+
ab+c+
16
115
311
64
61
317 s
99
17
Total
= 1000
The order of genes as determined from the above data was found to be bac” (note that
the order is equivalent to "cab" and the order of outside makers are arbitrary).
The map
distance between “b and c” is 405 cêntiMorgan (round off to 1 decimal place).
END OF THE QUESTION PAPER​

Answer 1

Answer:

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Explanation:

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