Which structure fuses to form a diploid zygote during sexual reproduction?

Knowing the importance of the essential elements, why would someone chose a diet that does not address all of them?

Are gametes exactly the same? explain why or why not?

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