In polls, most adults see the elderly as _____.

Rodrigo recently had to take a disability retirement from his job as an ironworker. On the retirement form required by his company, the doctor listed the reason as osteoarthritis. Which of the following symptoms is Rodrigo most likely experiencing?

a. swelling of the fingers b. pain in the hands c. pain in the shoulders d. swelling of the ankles

A person who is heterozygous for blue eyes - one allele for brown eyes and one allele for blue eyes - has