how many sperm cells are formed from an original cell in a drosophila fruit fly at the conclusion of meiosis.

Wind energy is plentiful in regions with vast open spaces it is a non polluting renewable resource what could be an economic factor that makes the use of this resource less feasible then non renewable resource even in such regions

Which of the following sex and generation combinations directly produces the pollen tube of angiosperms? a) male gametophyteb) female gametophytec) male sporophyted) female sporophyte

The fauces connects which of th following structures to the oropharynx