Randall Fleming submitted a homework assignment to Professor Zimbler for Biological Psychology 02 on 30 September 2009. The assignment covered chapters 1, 2, and 3. For chapter 1, Fleming summarized that religious affiliation seems to be the one human behavior with extremely low heritability. Genetic differences also likely account for differences in how rapidly people age, and evolution could select for genes that allow for higher reproduction rates before the onset of genes controlling old age.