Transmission of the pathogen of leishmaniasis is by the
A. tsetse fly.
B. phlebotomine (sand) fly.
C. reduviid, "kissing," bug.
D. hard bodied tick.
E. Anopheles mosquito.
Answer: B
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By itself, independent assortment of chromosomes increases the likelihood that individual daughter cells have ____
a. some paternal chromosomes and some maternal chromosomes b. only paternal chromosomes c. only maternal chromosomes d. chromosomes containing genes from both paternal and maternal chromosomes e. different numbers of chromosomes
You attempt deletion mapping of a part of the promoter region of a particular gene. You remove a short sequence of nucleotides. Once the altered DNA is transfected into cells, the cells are able to transcribe the transfected DNA in a normal fashion. What do you conclude?
a) The deleted sequence has a moderate level of importance in promoting transcription. b) The sequence that was removed is not an essential part of the promoter. c) The sequence that was removed is an essential part of the promoter. d) The sequence that was deleted is an important determinant of the ability to transcribe the gene.
The toxin production by Corynebacterium diphtheriae carrying a temperate phage is an example of __________.
a. phage conversion b. general transduction c. specialized transduction d. phage lysis
Priming of replication of double-stranded DNA does not require
a. a primase. b. SSBs. c. a replicase. d. DNA ligase. e. a free 3?-OH.