In humans and other mammals, inactivated X chromosomes:
A. exhibit no gene transcription.
B. exhibit a low level of transcription of a few
genes.
C. exhibit a low level of transcription of many
genes.
D. exhibit a normal level of transcription of a
few genes.
E. exhibit a normal level of transcription of
many genes.
C
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What is considered to be the limiting factor for the rare, lobefin coelacanth?
a. Depth b. Temperature c. Prey d. Habitat
Transcription occurs ________ and translation occurs ________ of eukaryotic cells.
A) in the nucleus; in the cytoplasm B) in the cytoplasm; in the nucleus C) in the nucleus; at the cell membrane D) in the cytoplasm; at the cell membrane
What, specifically, determines the sequence of
amino acids in a polypeptide of eukaryotes?
a. the DNA gene b. the introns c. the exons d. the initial mRNA transcript e. the tRNA anticodons
Scientists are always thinking about ways to improve
experimental design. In the text’s potato chip experiment, which of these might do so? a. show a different movie b. exclude teenagers as group members c. collect uneaten chip remains and weigh them for both groups d. provide free drinks e. use a smaller theater