Which of the Following Is True Regarding Determining the Number

Multiple Choice

Which of the following is true regarding determining the number of alleles in a population sample? 1.It may be impossible to count the number of alleles if one allele is dominant.
2) When counting X-linked alleles it is only important to count the different alleles in males.
3) Codominant alleles can always be counted because they produce unique phenotypes.

A) 1
B) 2
C) 3
D) 1 and 2
E) All of these