#Question id: 20284
#Unit 7. System Physiology – Animal
#Question id: 8841
#Unit 9. Diversity of Life Forms
Adaptive radiations can be a direct consequence of four of the following five factors. Select the exception.
#Question id: 791
#Unit 1. Molecules and their Interaction Relevant to Biology
Which one of this is not a normal base found in tRNA?
#Question id: 4648
#Unit 11. Evolution and Behavior
In a hypothetical environment, fishes called pike-cichlids are visual predators of algae-eating fish (i.e., they locate their prey by sight). If a population of algae-eaters experiences predation pressure from pike-cichlids, which of the following should least likely be observed in the algae-eater population over the course of many generations?
#Question id: 5294
#Unit 8. Inheritance Biology
Interrupted mating experiments were performed using three different Hfr strains (1-3). The three strains have different combinations of selectable markers. The time of entry for markers for each strain is shown is shown in the table given.
Hfr 1 |
Phe (5) |
Trp (35) |
Met (50) |
Ala (52) |
Hfr 2 |
Trp (2) |
Val (12) |
His (57) |
Pro (87) |
Hfr 3 |
Ala (10) |
Met (12) |
Val (37) |
Phe (57) |
Using the above data, predict the correct sequence of markers on the E. coli chromosome