In a conjugation experiment between bacterial Hfr strain 'X' and F-cell, lac gene enters the recipient in 4 minutes, but the F-cells remain auxotrophic for Leu, Trp, Ura, Glu, Phe and Gly. The mating is then allowed to proceed for 20 minutes and lac+ exconjugants are selected. Of the lac+ cells,
35% are leu+
98% are trp+
10% are ura+
65% are glu+
0% are phe+
81% are gly+
Select the correct order of the genes as they enter, from the choices given below:
1
trp+, gly+, glu+, leu+, ura+, phe+ lac+
2
lact+, phe+, ura+, leu+, glu+, gly+, trp+
3
phe+, ura+, leu+, glu+, gly+, trp+, lac+
4
lac+, trp+, gly+, glu+, leu+, ura+, phe+