A Barr body in a mammalian female cell represents a(n):
a. inactivated oocyte.
b. polar body.
c. degenerate nucleus.
d. inactivated X chromosome.
e. inactivated Y chromosome
d
Biology & Microbiology
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Competent cells are cells that
a. can take up DNA from their surrounding environment and integrate it into their own chromosomes by recombination. b. are also considered "rough-strain" based on colony phenotype. c. have the ability to produce capsules. d. are killed by heat.
Biology & Microbiology
Polycistronic transcription units are common in
A) Archaea. B) Bacteria. C) Eukarya. D) both Archaea and Bacteria.
Biology & Microbiology
Prokaryotes
What will be an ideal response?
Biology & Microbiology
Covalent bonds ________.
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology