The pituitary gland is known as the _____ gland because it controls the other glands in the body

Within the 46 chromosomes in each human cell, there are approximately __________ pairs of nucleotide bases

A) 1 million B) 10 million C) 500 million D) 3 billion

The hormonal changes that underlie puberty

A) are underway at birth. B) occur suddenly. C) are underway by age 8 or 9. D) are unimpressive.