What can happen in the knee of a person who does not have cartilage in his femur?

Why reason best illustrates why hershey and chase chose to use viruses in their experiment?

Some tools have graduations to show multiple measurements. for example, a ruler may have graduations for both millimeters and centimeters. when measuring the length of an earthworm, which graduations would allow for the most accurate measurement? millimeters centimeters decimeters meters

10. in which phase will crossing-over occur? a. mitosis b. metaphase ii c. prophase i d. meiosis ii