4.
Heritability is a technical term referring to the

5.
Older and more experienced individuals can sometimes outperform younger ones in cognitive tasks. This indicates that

10.
Match the following:
A. Phenyl Ketonuria (PKU) 1. Too little thyroid hormone
B. Microcephaly 2. Very small brain
C. Hydrocephaly 3. 47 chromosomes
D. Cretinism 4. Lack of an im portant enzyme
E. Down Syndrome 5. Excess of cerebrospinal fluid
6. Caused by a lack of oxygen at birth