Two fossils may be assigned to different species if
A) they are anatomically different.
B) one appears to be ancestral to the other.
C) they come from different places.
D) they show no evidence of being capable of interbreeding.
E) they come from different time periods.
A
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The main function of salivary mucus is to ____
a. break down starch b. mechanically breakup food materials c. make the food particles sticky d. hydrate dry food particles e. coat food particles so they slide down the esophagus
What is the path of an excreted water molecule as it moves from the glomerulus to collecting duct?
A. distal convoluted tubule-glomerular capsule-proximal convoluted tubule-loop of nephron--collecting duct B. glomerular capsule-proximal convoluted tubule-loop of nephron-distal convoluted tubule-collecting duct C. proximal convoluted tubule-glomerular capsule-loop of nephron-distal convoluted tubule-collecting duct D. glomerular capsule-proximal convoluted tubule-distal convoluted tubule-loop of nephron-collecting duct E. loop of nephron-glomerular capsule-proximal convoluted tubule-distal convoluted tubule-collecting duct
Bacteriophage T4 blocks transcription of host genes using an enzyme that transfers an ________ from NAD onto the alpha subunit of RNA polymerase.
What will be an ideal response?
Which of the following statements accurately describes the difference between aerobic and anaerobic respiration?
a. anaerobic respiration uses oxygen as the final electron acceptor, and aerobic respiration uses either an inorganic molecule, such as nitrate ions or sulfate ions, or an organic molecule, such as an acid or alcohol b. aerobic respiration uses O2 as the final electron acceptor, whereas anaerobic respiration uses H2O c. aerobic respiration uses oxygen as the final electron acceptor, and anaerobic respiration uses either an inorganic molecule, such as nitrate ions or sulfate ions, or an organic molecule, such as an acid or alcohol d. anaerobic respiration uses an organic molecule as the final electron acceptor, and aerobic respiration uses an inorganic molecule as the final electron acceptor