External stimuli can result in prevention of binding of transcription factors by which elements?

a. distal control elements
b. DNA bending proteins
c. repressors
d. promoters


c. repressors

Biology & Microbiology

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What is the key concept addressed by the question?

What will be an ideal response?

Biology & Microbiology

If a pure-breeding wired-hair terrier (WW) is crossed with a pure-breeding smooth-hair terrier (ww), and a puppy with

a wavy hair is produced, the simplest explanation is ____.

a. a mutation has occurred b. hair texture is an X-linked trait c. incomplete dominance d. hair texture is a lethal trait e. codominance

Biology & Microbiology

Which of the following is (are) responsible for the

movement of nutrients upstream? a. migratory fish and other animals b. phytoplankton c. bacteria d. leaching e. all of these

Biology & Microbiology

Which of the following attaches the target gene to a desired location?

a. DNA ligase b. Plasmids c. Restriction enzymes d. Chromosomal DNA

Biology & Microbiology