Question

Many organisms are oogamous and produce:
a. large, motile sperm cells and small, non-motile egg cells
b. small, non-motile sperm cells and large, non-motile egg cells
c. sperm and egg cells that are the same size and are both motile
d. small, motile sperm cells and large, motile egg cells
e. small, motile sperm cells and large, non-motile egg cells

Answer 1

http://www.cell.com/current-biology/abstract/S0960-9822(06)02454-7?cc=y