For what resons do cells divide

As a small change in a person's dna can cause a genetic disorder

Which event would lead to primary succession of a forest?

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.