Question 1
When a woman becomes pregnant from the fertilization of two separate ova by two separate sperm, these twins are called _________ twins:
◦ dizygotic
◦ monozygotic
◦ identical
◦ nonfraternal
Question 2
When baby Rex is bounced gently on his father's knee, his father can see the skin on the top of Rex's head move up and down, sort of like the skin is covering a bowl of jello. This is because:
◦ Rex's brain has not yet solidified and is a soft mass of tissue
◦ the fontanels in Rex's head have not yet fused into bone
◦ Rex must have some sort of bone disease that has prevented his skull from forming correctly
◦ Rex probably has Down syndrome
Baby Dog
Strength of Knee Joint
A skin paste
baby pig
Aging of the Baby Boomers
Baby getting vaccine