A sequence similarity search reveals that a candidate gene’s sequence has a partial match to a known gene’s sequence
What does this most likely indicate?
a. There is no relationship between the candidate and known gene.
b. The candidate gene encodes an identical transcript to the known gene.
c. The candidate gene encodes the same protein as the known gene.
d. The protein encoded by the candidate gene contains a protein domain also found in the known gene’s protein.
e. The protein encoded by the candidate gene has the same function as the protein encoded by the known gene.
ANSWER: d
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The Barr body is the X chromosome in the cell that is expressed, whereas the other X chromosome is inactivated
Indicate whether the statement is true or false
A bacterial cell is found to be motile and resistant to high temperature and phagocytosis. What structure does this cell probably have?
A. Flagella, pili, plasmid B. Flagella, pili, capsule C. Endospore, capsule, ribosome D. Endospore, flagella, capsule
DNA fragments cut by most restriction enzymes have:
A) either only sequences of Gs or only sequences of Cs. B) protruding sticky ends. C) double-stranded complementary ends. D) cuts made at random points along one of the strands.
The location of translation in prokaryotic cells is
A. on mesosomes. B. on chromosomes C. on ribosomes. D. in the nucleoid. E. on the plasma membrane.