Which of the following organisms does NOT reproduce its cells by mitosis and cytokinesis?
A) A cockroach
B) A cow
C) A bacterium
D) A mushroom
E) A banana tree
C
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Chagas disease is caused by:
a. Trypanosoma rangeli. b. Trypanosoma cruzi. c. Trypanosoma brucei rhodesiense. d. Trypanosoma brucei gambiense.
Indicate the order of the point mutations in the rII region.
Shown below are the maps of a series of rII- deletion strains (1–5). The deleted region is indicated as (......) and the intact region as ______. Note that strain 5 carries two different deletions.
1 ___________(...........)_______________
2 _________________(...........)_________
3 (.....................)_____________________
4 ________________________(................)
5 _____(..........)________________(.........)
rII- phage strains A-E have point mutations in the rII region. E.coli K(?) cells are coinfected with one phage that has a deletion and one phage that has a point mutation. The presence of wild-type progeny phage is assessed by the presence (+) or absence (o) of plaques.
A) CADBE
B) DEBAC
C) BADCE
D) ABDEC
E) CEADB
Additional question (answer with TRUE or FALSE) :
The test described here depends on recombination.
The leading cancer killer of women is
a. ovarian. b. uterine. c. breast. d. lung. e. bone.
In humans, the type A and type B blood alleles are codominant to each other and both are completely dominant over the type O blood allele.
a. true b. false