Mendel selected garden pea for his breeding experiment because of its contrasting characters such as height of the plant, yellow or green seed, round or wrinkled seed shape. ... Then he allowed the hybrid plants of F1 generation to self-pollinated. In F2 generation all the progeny were tall as well as short plants...We used to take this character, we may choose different.
Parasites would not want to kill their host cells immediately because they want their food source or keep getting food, not to kill their food source (host cell). Parasites live on another living host cell for their survival, they depend on host organisms to gets an energy source, without the host cell they can't live, develop and multiply.
Mostly, if the host cell dies then the parasite also can't able to grow or reproduce and it will also die. So that they don't want to kill their host's cell immediately.
<span>The human impact on biological diversity. How
species adapt to urban challenges sheds light on evolution and provides
clues about conservation</span>
Resource partitioning is the division of certain limited resources by species to eliminate competition in an ecological niche in order to allow easy coexisting with one another
The creeper searches for insects by hunting from the bottom of the tree trunk to the top, whereas the nuthatch searches from the top of the trunk down to eliminate competition and allow for peaceful coexisting between them
