#Question id: 8289
#XL - S Microbiology
The term convergent evolution is most applicable to which of the following features?
#Question id: 5764
#XL - R Botany
A wild-type chromosome can be represented as ABC * DEFGH, and from this a chromosomal aberration arises that can be represented AFED * CBGH. This is known as (* = centromere)
#Question id: 10240
#XL - T Zoology
A consequence of resource partitioning
#Question id: 5295
#XL - S Microbiology
A cross is made between an Hfr that is met+ thi+ pur+ and an F-that is met- thi- pur-. Interrupted mating studies show that met+ enters the recipient last, so met+ recombinants are selected on a medium containing supplements that satisfy only the pur and thi requirements. These recombinants are tested for the presence of the thi+ and pur+ alleles. The following numbers of individuals are found for each genotype:
A) Gene Order |
I |
Thi Pur Met |
II |
Pur Met Thi |
|
III |
Pur Thi Met |
|
B) Distance between Pur and Thi |
IV |
15.4 map unit |
V |
1.8 map unit |
What is the following correct combination?
#Question id: 11914
#XL - T Zoology
Alder trees, which harbour nitrogen-fixing bacteria in their roots, provide nitrogen to soils developing on sandbars rivers, this is an example of,