Please help me in number 2 question, Thanks

The afrikaners are an example of a founder effect that occurs when a new colony is started by a few members of the original population and the random decrease in genetic variation is an example of

Look at the images of different rocks. which rocks have a fine-grained texture? check all that apply. 1 2 3 4 5

Crossing over and independent assortment are important activities that occur during meiosis. what is the significance of these activities