How does crossing over add to the genetic diversity of sexually reproducing organisms?
a. it involves segments of two homologous chromosomes trading places.
b. it involves random segregation of the homologous chromosomes to each daughter cell.
c. it involves fertilization of an ovum by any one out of millions of sperms.

Which of the following typically characterizes a tropical rainforests

Do the following statements describe actin, myosin, both of the proteins or neither of the proteins? (a) contains a binding site for calcium (b) found in the i band (c) exists in a globular (g) form and a filamentous (f) form (d) contains a binding site for atp (e) is a component of the thin filament (f) is a component of the thick filament

Which of these definitions have been paired with the correct type of cell?