What is true about a biofilm-defective mutant generated by transposon mutagenesis?
a. The transposon interrupted a gene encoding a protein important for biofilm formation.
b. The transposon inserted a gene that prevented biofilm formation.
c. The transposon introduced antibiotic resistance that interfered with biofilm formation.
d. A and B could both be true.
Answer: A
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A) 3% B) 8% C) 10% D) 20%.
During sporulation in Bacillus subtilis, the response regulator that positively controls many genes needed for sporulation and negatively controls genes not needed during sporulation is
A. SpoOB. B. SpoOF. C. SpoOC. D. SpoOA.
Humans differ from each other by 1 in 1000 to 1 in 5000 nucleotides, while chimpanzees differ from each other by 1 in 500 nucleotides. This suggests that _____
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During implantation, the __________ buries itself in
the uterine wall.