<span>Regular visits to the dentist should be scheduled every B. 6 months. Three months is too frequent to visit your dentist, because not many cavities or tooth decays can happen in such a short period of time. Twelve and eighteen months is too seldom a period to visit your dentist, it should be more frequent. So, the correct answer is somewhere in the middle, and that is 6 months, or twice a year.</span>
At the heart of the eukaryotic cell-division cycle are the precise duplication and segregation of chromosomal DNA. These two events take place at distinct points of the cell cycle: DNA is replicated during S phase, and then the replicated DNA strands are accurately partitioned to the two daughter cells during M phase.
Answer:
C
Explanation:
Puberty occurs when a part of the brain called the hypothalamus begins to produce a hormone (gonadotropin) that has an effect on the testes and ovaries causing an increase sex hormone — estrogen in girls and testosterone in boys.
