The whooping cough vaccine for children is very safe for your baby. The whooping cough vaccine for children (2 months through 6 years) is called DTaP vaccine. The DTaP vaccine combines protection against diphtheria, tetanus and whooping cough. Currently, there are 3 licensed formulations of the DTaP vaccine.
A human body cell would have 46 chromosomes. Since a human egg cell is a reproductive cell (sex cell), it would contain only half the number of chromosomes as a body cell. Thus, a human egg cell would have 23 chromosomes. A sex cell has half the number of chromosomes for a good reason. When two sex cells reproduce, they combine to form double the number of chromosomes. So when two cells with 23 chromosomes each reproduce, the offspring would have 46 chromosomes.
Menstrual Cycle. Background: When a human female is born, her ovaries already contain all the immature eggs that. will later mature and produce functional eggs during her lifetime. Eggs usually begin to mature. between the ages of 12 and 14, when a release of hormones triggers puberty and a young woman. reaches sexual maturity. Most commonly, eggs mature every 28 days or so. They usually mature. one at a time, in alternating ovaries. This rhythmic maturation of eggs and the other chemical and.