How many variant gametes (in meiosis of a single cell) can be produced if we allow for crossing over on the longer of the two chromosomes? How many variants could be produced over time by a population of these cells undergoing meiosis and then fertilization?

Ryan rears sheep for their wool. recently the quantity of wool that ryan gets has diminished. this is because the new sheep are not that wooly. ryan should add which nutrient to their feed so that the sheep becomes more wooly? a.cornb.ironc.cottonseedd. vitamin a

What was the land like over 500 million years ago? what was under the sea?

Plz ! ive been stuck on this forever