A purine base normally pairs with a pyrimidine base.
Indicate whether the statement is true or false.
Answer: True.
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You purchase two identical houseplants and place them side by side on your windowsill. You keep the soil moist in one of the plants (plant a), and you water the other plant (plant b) only once every two weeks
Do you expect the plants to be the same height after six months of this watering regime? A. Yes, because both plants are still getting water. B. Yes, because both plants are still getting water and sunlight. C. No, because the cells of the apical meristem are unable to express meristem identity genes without sufficient water in plant b. D. No, because the cells of the apical meristem are unable to elongate without sufficient water in plant b.
Most of the absorption of nutrients (besides water) takes place in the ________
A) esophagus B) small intestine C) stomach D) large intestine
©McGraw-Hill EducationThe common ancestor shared by mouse and gorilla is at point ________ on the phylogeny shown.
A. A B. B C. C D. D E. E
In a population of 100 four-o'clock flowers there are 40 red-flowered plants (CRCR), 38 pink-flowered plants (CRCW), and 22 white-flowered plants (CWCW). What is the frequency of the CW allele in this population?
A. 0.41 or 41% B. 0.52 or 52% C. 0.6 or 60% D. 0.09 or 9% E. 0.32 or 32%