Considered a dissociative symptom, __________ is a marked sense of unreality about yourself and the world around you

By age 5 years, the brain has attained about half of its adult weight

Indicate whether this statement is true or false.

At fertilization, the chromosomes from the father's sperm unite with the chromosomes from the mother's egg, creating a new cell called a(n) __________

a) embryo. b) zygote. c) genome. d) blastocyst.