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#Question id: 6974
#SCPH01 Biochemistry
Where are the stem cells that renew the epithelium of the gut found?
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#Question id: 5076
#SCPH06 I Botany
Homeotic genes are responsible for:
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#Question id: 15622
#SCPH06 I Botany
9 In your study of a new bacterial species you have identified a transducing phage that you call Px. In addition you have worked out methods to make random transposon insertions into the bacterial genome. You have generated two different transposon insertion collections one with 105 random Tn5 (Kanr) insertions and the other with 105 random Tn10 (Tetr) insertions. You grow Px phage on the mixed collection of Tn5 insertions and use the resulting phage lysate to infect the mixed collection of Tn10 insertions. You select 10,000 Kanr transductants and find that 80 of them are Tets. Use this information to estimate the total size of the bacterial genome assuming that both Tn5 and Tn10 insert randomly and that the average size of a fragment recombined into the recipient genome during Px transduction is 55 kbp. (Tn5 is about 5 kbp and Tn10 is 10 kbp.)
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#Question id: 1677
#SCPH01 Biochemistry
The Ly49A receptor on NK cells does NOT:
TLS Online TPP Program
#Question id: 8294
#SCPH28 | Zoology
The common ancestors of birds and mammals were very early (stem) reptiles, which almost certainly possessed three-chambered hearts (two atria, one ventricle). Birds and mammals, however, are alike in having four-chambered hearts (two atria, two ventricles). The fourchambered hearts of birds and mammals are best described as ________.