In peas, tall plants are dominant to short plants. A cross between a tall pea plant and a short pea plant results in half the progeny being tall, and the other half being short. Therefore, the tall parent plant is genotypically
A) homozygous.
B) heterozygous.
C) hemizygous.
D) monozygous.
E) homogeneous.
B
You might also like to view...
When sediment removal is less than input we often find:
a. fjords. b. tectonic estuaries. c. tidal flats. d. bar-built estuaries. e. drowned river valleys.
How do the strands separate during PCR?
a. The primers separate the strands during the annealing step. b. The DNA polymerase breaks the hydrogen bonds between the two strands. c. The cycling of the temperatures breaks the hydrogen bonds between the two strands. d. The high heat of the denaturation step breaks the hydrogen bonds between the two strands.
Neurulation begins in the ____ region and moves in the ____ direction(s).
A. Cranial; Rostral B. Cervical; Medial & Lateral C. Cervical; Rostral & Caudal D. Thoracic; Rostral & Caudal E. Lumbar; Medial & Lateral
In the black bread mold Rhizopus stolonifer, the two different mating types yield
a. a gametangium. b. a zygosporangium. c. two diploid cells. d. two haploid cells.