Researchers can cut DNA at specific base sequences using ________
a. DNA ligase
b. restriction endonucleases
c. cloning vectors
d. probes
b
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Based on Darwin’s and Wallace’s research which individuals in a population are most likely to survive?
a. the strongest individuals are most likely to survive b. the fastest individuals are most likely to survive c. the individuals that inherited characteristics that allow them to best compete for resources are most likely to survive d. any individual in a population is as equally likely to survive as another individual in that population
How do agricultural practices affect the nitrogen cycle?
What will be an ideal response?
The function of vertebrae is to
A. protect the brain. B. protect the nerve chord. C. protect the nerve cord and provide attachment points for muscles. D. provide attachment points for muscles. E. protect the brain and nerve cord.
Which gland secretes a hormone that influences daily biorhythms?
1.hypothalamus 2.pineal gland 3.pituitary gland 4.thymus