Which of the following is/are true of the sheath of Leptothrix?
A. May contain ferric and manganic oxides
B. Helps protect against microbial predators
C. Attaches bacteria to surfaces
D. All of the choices are correct.
Answer: D
You might also like to view...
Which of the following organisms is used by molecular biologists to produce transgenic plants?
A. E. coli B. Plasmid pSC101 C. Bacteriophage l D. Agrobacterium tumefaciens
A technique that separates a readable pattern of DNA fragments is ________.
A. genetic engineering B. biotechnology C. recombinant DNA D. gel electrophoresis E. gene probes
Salmonella, Shigella, Yersinia, and Serratia are all
A) pathogens. B) gram-negative facultatively anaerobic rods. C) gram-positive aerobic cocci. D) fermentative. E) endospore-forming bacteria.
Consider two loci (A, B) each with two alleles (A, a; B, b). The frequency of A is known to be = 0.3, the frequency of b is known to be = 0.25 and the value of linkage disequilib-rium between loci A and B is known to be = 0.15
What is the expected haplotype frequency of haB? Please show your work. What will be an ideal response?