Four E. coli strains of genotype atb¯ are labeled 1, 2, 3, and 4. Four strains of genotype a¯b* are labeled 5, 6, 7, and 8. The two genotypes are mixed in all possible combinations and, after incubation, are plated to determine the frequency of a*b+ recombinants. The following results are obtained, where M=many recombinants, L=low number of recombinants, and 0=no recombinants: 1 3 4 M M 6. M M L M 8 L L Based on these results, assign a sex type to each strain. Answer Bank 2 F- Hfr F+ 3 4

Q: Jx Group Number 1 2 3 4 5 1 2 3 4 5 6 LL CLASS TOTALS C D Purple Smooth 290 242 152 336 329 270 198…

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A: Answer

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Q: KI 1 2 3 4 в 5 10 11 12 13 14 15 16 17 E 18 D 88 88 19 20 21 22 23 F X/Y

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Dissection

Dissection is the process of cutting up the tissue of a dead or live animal or plant, to do anatomical studies and surgical treatments. The purpose of dissection is to learn more about the overall structure of organs and organ systems and thereby understand the physiology of the organism.