What did charles darwin discover as a result of his experiments with breeding pigeons?

a. desirable traits can be selected for and bred in offspring.

b. humans can create new species through selective breeding.

c. dogs and plants can be bred the in same way as pigeons.

d. the pigeons had distinctive traits that were passed on to offspring.

volcanoes (an event in the geosphere) release a large amount of particulate matter into the atmosphere. these particles serve as nuclei for the formation of water droplets (hydrosphere). rainfall (hydrosphere) often increases following an eruption, stimulating plant growth (biosphere).

the answer would be 2, if crossing over doesn’t occur 2 out of 4 of the daughter cells will have that allele.

hope this : )