If all offspring of a cross have the genotype Aa, the parents of the crosses would most likely be ____
a. AA ? aa
b. Aa ? Aa
c. Aa ? aa
d. AA ? Aa
e. aa ? aa
ANSWER: a
You might also like to view...
All types of cells are capable of all of the following EXCEPT:
a. metabolism. b. movement. c. growth. d. reproduction. e. energy conversion.
Which of the following statements concerning a secondary immune response is false?
a. It is a response to an antigen. b. It may occur years after a primary response. c. It involves memory cells. d. It has a longer latent period than a primary response. e. It is stimulated by less antigen than in a primary response.
Which of these is an example of hybridization?
a. breeding beagles and pugs to produce puggles b. breeding Hereford and Aberdeen Angus cattle to produce Black Baldy cattle c. breeding African Servals with domestic cats to produce Savannah cats d. breeding American Saddlebred and Arabian horses to produce National Show Horses
Which trend best describes the levels of atmospheric CO2 since the start of the Industrial Revolution?
a. gradual decrease b. period fluctuations c. steady increase d. no apparent change