Alleles are
a. segments of tRNA that code for polypeptide chains.
b. only present on X and Y chromosomes.
c. the entire genetic make-up of an individual.
d. alternative forms of a gene.
e. proteins.
Question 2
How many chromosome pairs occur in a normal human somatic cell?
a. 24
b. 23
c. 26
d. 25
e. 22