Ethylene has the effect of causing fruits to
A. enlarge.
B. elongate.
C. shrink.
D. ripen.
E. increase in juice content.
Answer: D
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Mammals and birds eat more often than reptiles. Which of the following traits shared by mammals and birds best explains this habit?
A) endothermy B) ectothermy C) insulating body cover D) amniotic egg E) terrestrial
In eukaryotic cells, the cell cycle is divided into two main phases in which the cell spends most of its time and metabolic energy. These two phases are
A. interphase and mitosis. B. mitosis and meiosis. C. interphase and cytokinesis. D. interphase and binary fission. E. mitosis and cytokinesis.
The contributions of genes and environmental factors are strictly defined during the study of complex traits
a. True b. False
Complementary DNA (cDNA) probes are produced using ________.
A. restriction endonucleases B. reverse transcriptase C. RNA polymerase D. DNA ligase