If an organism has 4 pairs of chromosomes how many gametes can it produce

How can scientists test their ideas about the origin of the universe if they can't physically interact with or study?

What occurs to the cell during mitosis

What evidence supports the law of conservation of energy? a) mechanical energy is converted to chemical energy during photosynthesis. b) oxygen is made from the breakdown of carbon dioxide during photosynthesis. c)energy is absorbed by chlorophyll and becomes chemical energy during photosynthesis. d)the sun gives off light energy that is absorbed by plants.