The color of a flower is controlled by two alternative alleles at a single locus, R (red) and r (white). If an individual has the Rr alleles, it is considered to be

A) homozygous dominant with a red color.
B) heterozygous with a red color.
C) heterozygous with a white color.
D) homozygous recessive with a white color.


B

Biology & Microbiology

You might also like to view...

Select the answer that best completes the following statement: Chemical reactions in living systems occur in an ____________ environment, within a narrow range of temperatures

(a) optimal (b) organic (c) extracellular (d) aqueous

Biology & Microbiology

Which of the following statements reflects the first law of thermodynamics?

A. The energy of the starting materials for a reaction will equal the sum of energies of the products plus energy released as heat and disorder. B. The amount of useable energy resulting from a reaction will always be less than the total energy available in the starting materials. C. The entropy of the products of a reaction will always be greater than the entropy of the starting materials. D. The entropy of the starting materials for a reaction will always be greater than the entropy of the products.

Biology & Microbiology

Which statement describes a virulent phage?

a. A virulent phage infects viruses. b. A virulent phage infects prions. c. A virulent phage infects virions. d. A virulent phage destroys bacteria. e. A virulent phage infects but does not destroy bacteria.

Biology & Microbiology

Knowing the sequence of a genome is useful in

A. identifying genetic alterations associated with disease. B. studying evolutionary relationships. C. determining protein sequences. D. All of the choices are correct.

Biology & Microbiology