You cross a true-breeding red-flowered snapdragon with a true-breeding white-flowered snapdragon. All of the F1 are pink. What can you say about the alleles for the parental traits?
A. Both red and white are recessive.
B. Red and white show incomplete dominance.
C. Pink is dominant, whereas red and white are recessive.
D. Red is dominant.
B. Red and white show incomplete dominance.
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Which of the following is used to help protect the lungs from infection?
A. The mucociliary escalator moves trapped organisms away from the lungs by ciliary action. B. Coughing and sneezing forcefully expel organisms away from the lungs. C. Turbulent airflow deposits airborne pathogens on sticky mucosal surfaces. D. All of the choices are correct.
Angiosperms
a. are the most successful of all plants. b. are the most diverse of all plants. c. produce seeds inside an enclosed structure. d. have embryos that are provided with endosperm. e. have all of these characteristics
The viscosity of water is lower than the viscosity of air
Indicate whether the statement is true or false
A measure of the average kinetic energy of the molecules making up a substance is known as
A. temperature. B. heat. C. potential. D. phase of matter.