Which of the following statements is true of meiosis?
a. It decreases diversity and decreases the amount of chromosomes.
b. It decreases diversity and increases the amount of chromosomes.
c. It increases diversity and decreases the amount of chromosomes.
d. It increases diversity and increases the amount of chromosomes.
C
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Put the following events of transcription in chronological order. 1. Sigma binds to the promoter region. 2. The double helix of DNA is unwound, breaking hydrogen bonds between complementary strands. 3. Sigma binds to RNA polymerase. 4. Sigma is released
Put the following events of transcription in chronological order. 1. Sigma binds to the promoter region. 2. The double helix of DNA is unwound, breaking hydrogen bonds between complementary strands. 3. Sigma binds to RNA polymerase. 4. Sigma is released. 5. Transcription begins. A) 2, 3, 4, 5, 1 B) 2, 3, 1, 4, 5 C) 3, 1, 2, 5, 4 D) 3, 2, 1, 4, 5
The first step of PCR is called annealing
A. true B. false
Laboratory research has shown that if a solution containing lipids and proteins is agitated for a long time, then hollow structures called vesicles are produced that resemble ________
Fill in the blank(s) with correct word
Treatments for depression often include drugs that help correct imbalances in the levels of
A) serotonin. B) acetylcholine. C) nitric oxide. D) epinephrine.