How many african americans are carriers of the sickle-cell allele? 1 in 500 1 in 100 1 in 11 1 in 50

What are tissues? a groups of tissues that work together b basic units of structure and function c groups of cells that perform the same function d multiple organs that perform a major function

Why does it matter if osmosis is put into a “scab” or a “nosebleed? ” where would that leave him?

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.