59. It is difficult to muzzle brachycephalic dogs because they have:
a. Tiny heads
b. 0 Short noses
c. O Large teeth
d. Fragile heads

is called echinoderms

as in mitosis, dna replication occurs during interphase.   in meiosis, it occurs specifically in s phase of interphase 1.

during the process of dna replication, brdu can replace thymidine and incorporate into the newly synthesized dna, cell proliferation thus can be reflected in the extent of brdu incorporation.