5. Which of the following types of immunoglobulins does not cross the
barrier between mother and infant in the womb?
1. IgA
2. IgM
3. IgD
4. IgE

Arah is eating lunch with friends outside in the commons area of her school. one of sarah’s friends offers to share a marijuana joint with her. what could be the outcome if sarah were caught smoking marijuana at school? nothing will happen because she did not buy the joint. she could be suspended from school. nothing will happen because she is underage. the consequences would be up to sarah’s parents.

During the first month of development, how many layers of cells make up the embryo? a. 1 b. 2 c. 3 d. 4

Marcus's genotype for eye color is bb. olivia has brown eyes, but she is heterozygous for the trait. what percentage of the children have blue eyes? if violet has green eyes and jonas has brown eyes, what is claudia's genotype? how many people in the family have blue eyes?