Some genes, such as the human ABO blood groups, have more than two alleles. For these genes:

a. a greater proportion of the individuals must be heterozygous than homozygous.
b. some individuals can be triply heterozygous.
c. normal dominance relationships are not possible.
d. individuals can only possess two alleles.
e. All of the above are correct


Ans: d. individuals can only possess two alleles.

Biology & Microbiology

You might also like to view...

Which of the following proteins binds to DNA with sequence specificity (select all correct choices)?

A. Pol III holoenzyme B. DnaA C. DnaB D. Dam methylase

Biology & Microbiology

Which of the following describe a role that ethylene plays in plant physiology. Check all that apply.  

_____  Retarding stem and root elongation. _____  Hastening the ripening of fruit. _____  Inhibition of leaf abscission. _____    Inhibition of lateral bud growth. _____  Accelerates the loss of damaged fruits.

Biology & Microbiology

Which white blood cells will harbor the HIV virus during the early infectious stages of AIDS?

a. Macrophages b. Helper B cells c. Mast cells d. Cytotoxic T cells e. Helper T cells

Biology & Microbiology

Which of the following is a primary consumer?

a. tiger b. elephant c. eagle d. hyena e. snake

Biology & Microbiology