Which of the following events happens first in the development of a new organism?

a. a zygote undergoes mitosis.
b. a sperm fertilizes an egg to form a zygote.
c. a blastocyst implants into the uterine wall.
d. a morula is formed.

During a fierce storm a large number of tall trees on an island are uprooted by the wind and die. most of the trees on the island are now short trees and produce seeds that grow into short trees. what concept is shown in this example? question 5 options: natural selection artificial selection genetic engineering gene splicing