Some such as ticks and fleas have a adaptations that allow them to attach to the host organisms and feed on its blood

Environmental impacts on evolution : mastery test

What is gene expression control that occurs after the generation of rna

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.