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: 5541

#Unit 5. Developmental Biology

What is the valued average rate at which the human brain produces neurons during development?

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#Question id: 12956

#Unit 10. Ecological Principles

For  nearly 200  years, biogeographers have  noted that  the  tropics  have  more terrestrial species than  temperate regions. Which of the following is NOT a plausible explanation for this pattern?

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#Question id: 11983

#Unit 10. Ecological Principles

Which of the following is a behavioral pattern resulting from an ultimate cause?

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#Question id: 19742

#Unit 3. Fundamental Processes

Match the following 

Organism	Size of RNA component
A) Tetrahymena	i) 451 bases long
B) Humans	ii) 1.3 kb in yeast
C) Yeast	iii) 159 bases long

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#Question id: 3696

#Unit 3. Fundamental Processes

In eukaryotes, which of the following DNA polymerase is required for mitochondrial DNA replication?