#Question id: 24643
#Unit 10. Ecological Principles
Which of the following statements about typical soil horizons is correct?
#Question id: 4384
#Unit 3. Fundamental Processes
Transcriptionally inactive genes
#Question id: 5281
#Unit 8. Inheritance Biology
In the mating Hfr Strs met+ his+ leu+ trp+ Ala+ X F- Strres met- his- leu- trp- Ala-. At regular interval time, the mating cells are interrupted and the cell suspensions plated on four different growth media with streptomycin. The amino acids in the growth media and the number of colonies observed on each are as follows:
|
Interrupted time |
Composition of media |
Growth |
||||
|
His |
Leu |
Ala |
Trp |
Met |
||
|
2 min |
+ |
- |
+ |
+ |
+ |
Yes |
|
10 min |
+ |
- |
- |
+ |
+ |
Yes |
|
12 min |
+ |
- |
- |
+ |
- |
No |
|
15 min |
+ |
- |
- |
- |
+ |
Yes |
|
20 min |
- |
- |
- |
- |
+ |
Yes |
What is the order of transfer of the genes?
#Question id: 48
#Unit 1. Molecules and their Interaction Relevant to Biology
Which of the following statements regarding enantiomers true?
#Question id: 23947
#General Aptitude