Match each blood vessel with a fact.
matching questions matching answers
arteries
a. carry blood back to the heart
veins
b. carry blood with oxygen away from the heart
capillaries
c. the smallest kind of blood vessels with very thin walls so that gases can pass through these

Color blindedness is a sex-linked trait. if we could see the pedigree chart for several more generations of the family illustrated here, we would expect a) more males to be color blind. eliminate b) more females to be color blind. c) no females to ever be color blind. d) an equal number of males and females that are color blind.