During the process of mitosis, which event occurs to each chromosome in the cell nucleus? A. Each chromosome breaks apart into individual pieces, called genes.
B
Each chromosome merges with another chromosome, forming a tetrad.
C. Each chromosome is pulled apart, forming two identical chromatids.
D. Each chromosome is pulled apart, forming two non-identical chromatids.
E. Each chromosome is duplicated, forming two identical chromosomes.

they fuse to form they have half as many chromosomes as a somatic cell of the same individual. b

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands