Experiments that utilize the deletion of a gene are referred to as ____ experiments
a. ablation
b. control
c. deletion
d. knockout
e. tinman
d
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Which statement about the geologic time scale is
incorrect? a. Mammals originated early in the Mesozoic era. b. Adaptive radiation of flowering plants, insects, and birds took place during the Mesozoic era. c. Mass extinction of the dinosaurs occurred about 65 million years ago. d. Reptiles originated during the Paleozoic era. e. Eukaryotes originated during the Proterozoic eon.
The evolution of which trait allowed plants to grow taller?
A) seeds B) vascular tissue C) flowers D) photosynthesis
Aerotolerant anaerobes can use oxygen (when available) in their metabolism to increase the efficiency of ATP production.
a. true b. false
Before photosynthesis evolved, ________ was rare in Earth's atmosphere
A) O2 B) CO2 C) H2O D) N2 E) air