Human beings are somewhat unusual among primates in the length of their life span beyond their productive years. This may have provided an adaptive advantage over the course of evolution and is known as ____.
a. the wisdom of elders
b. the grandmother effect
c. survival of the fittest
d. the grandfather effect
Question 2
Which of the following best describes the relationships of older adults?
a. Older adults have more friendships than younger adults.
b. Older adults are more likely than younger adults to form new friendships.
c. Older adults do not gain significant benefits from their friendships.
d. Older adults often find their relationships with siblings especially meaningful.
The Human Ear
Conventions commonly encountered in human pedigrees
Annotation of a DNA sequence containing part of the human beta-globin gene
Drosophila life cycle
Cross-section of a human molar
Normal karyotype of a human male