An R loop experiment was performed on two different mRNA's. The first showed one R loop, while the second showed two R loops separated by a region of double-stranded DNA. What is the composition of these two mRNA's?
A. The first contains no introns and the second two introns
B. The first contains no introns and the second one intron
C. The first contains one intron and the second two introns
D. The first contains two introns and the second one intron
B
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How do prokaryotes alter their genetic makeup through conjugation?
a. by moving DNA with a pilus b. by incorporating surrounding DNA into the genome c. by moving DNA with a bacteriophage d. by using microbial metabolism to accept new DNA
A surge in __________ triggers tadpole
metamorphosis. a. testosterone b. cortisol c. atrazine d. thyroid hormone e. pheromones
The theory that earthquakes, floods, and other natural disasters cause extinctions of some species while leaving others unharmed is ________
Fill in the blank(s) with correct word
What is being described? Formed by covalent bonds between nucleotides
What will be an ideal response?