A(n) is a fossil created when hard parts of an organism are replaced with minerals that turn to stone.
a. cast fossil
b. trace fossil
c. petrified fossil
d. imprint fossil?

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.