Some bacteria are capable of obtaining DNA from the environment, which is problematic with antibiotic resistance genes. When a competent cell takes in DNA from outside the cell, it is termed
A) incorporation.
B) transformation.
C) encapsulation.
D) transduction.
Ans: B) transformation.
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DNA evidence suggests that early farmers from Turkey, Syria, Iraq, and other Near Eastern cultures migrated to ________ and interbred with hunter-gatherers there.
A) Europe B) Africa C) North America D) Siberia
The two most important factors that appear to have been involved in past mass extinctions are:a
fire and climatic factors. b. disease and parasites. c. glaciers and earthquakes. d. environmental and biological factors. e. plate tectonics and climatic factors
The tissue containing nerves, blood, and lymph vessels in teeth is known as the:a
dentin. b. cementum. c. enamel. d. tooth socket. e. pulp cavity
Which is the largest, most diverse group of arthropods?
a. crustaceans b. centipedes c. arachnids d. insects e. millipedes