A preditor-prey system, the 2 species are related by; co-evolution(because preditors eat prey that is available and plentiful, for example a rodent species.
also, the population cycle because rodents live for a short period of time in the wild, but reproduce quickly. example; spring and summer seasons is when food is most plentiful for all species of wildlife,
In a predator-prey system, the two species are related by the population cycle.
Explanation:
A recent study was published in NATURE which demonstrated that predator prey system is related with each other through population cycle.
As the population of organisms keep on changing with time. For example mouse and rats produce 7-10 off springs in a month while snake that hunt mouse breed only seasonally once or twice a year.
Here is the full study that will help you under stand better.
Citation: Stevens, A. (2010) Dynamics of Predation. Nature Education Knowledge 3(10):46
The key difference between microspore and pollen grain is that microspore is the small spore that develops into the male gametophyte in plants while pollen grain is the small grain that contains the male gametophyte.
Mutation in the cancer critical genes leads to the formation of stable mutant protein whose accumulation leads to the origin of cancer cells. Mutant p53 proteins not only lose their tumor suppressive activities (P53 gene is a tumor suppressive gene) but often gain additional oncogenic functions that allow for uncontrolled division of cells allowing increased growth and survival advantages. the same also goes for the retinoblastoma gene which is also a tumor suppressor gene that regulates cell division and other cellular activities. This mutations are usually inherited and can be transfered to their offspring.