One of the ways in which the smooth muscle contractions of the digestive tract are controlled is by
A. mass movements.
B. the nervous system.
C. propulsion.
D. peristalsis.
E. chyme secretion.
B. the nervous system.
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If blending inheritance was an accurate model of transmission genetics, which of the following would be true?
A. Variation in natural populations would remain the same over time. B. Variation in natural populations would increase over time. C. Variation in natural populations would decrease over time. D. Variation would increase in some populations, decrease in some populations, and remain the same in some populations. E. Mutation would not contribute to variation in natural populations.
Foods such as acidic fruits are often spoiled by
A. fungi. B. protozoans. C. viruses. D. bacteria.
The concept of orthogenesis proposed evolution was goal oriented
Indicate whether the statement is true or false.
Why are pea plants (Pisum sativum) a good species for genetics studies?
A. They have many distinctly identifiable forms of genetic traits.
B. They can be self-fertilized for true-breeding genetic traits.
C. They produce large numbers of offspring (the peas).
D. All of the answer choices are correct.
E. Growth of pea plants is simple and easy.