Phosphoric acid attachment occur to ribose or deoxyribose at

A. C3 during phosphodiester bond formation

B. C5 during nucleotide formation

C. C2 during phosphodiester bond formation

D. C1 during nucleotide formation

Which of the combinations contains all incorrect statements?

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#Question id: 5183

#General Aptitude

Find the least number which when divided by 5, 7, 11 leaves reminders 1, 2, 4 respectively?

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#Question id: 15621

#Unit 13. Methods in Biology

Wild type E. coli metabolizes the sugar lactose by expressing the enzyme ß-galactosidase. You have isolated a mutant that you call lac1–, which cannot synthesize ß-galactosidase and cannot grow on lactose (Lac–). During an condition Lac– strain, called lac3–, is linked to the Tn5 insertion. From a strain carrying the Tn5 insertion and lac3– mutation you isolate an F’ that caries a region of the chromosome that includes both Tn5 and the linked Lac region. Introduce this F’ into an F– strain carrying lac1– by selecting for Kanr. These merodiploids express ß-galactosidase normally. If the merodiploid were Lac–, 

a) the two mutations lie in the different gene.

b) Both mutation are complement each other

c) the two mutations lie in the same gene.

d) Both of the mutations is dominant to wild type.

what could you conclude about the relationship between the lac3– and lac1– mutations from  these statements?

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#Question id: 26572

#Unit 3. Fundamental Processes

Choose the following is incorrect statement about Polycomb or Pc-G proteins

a. Pc-G proteins do not initiate repression

b. Pc-G proteins initiate repression

c. They are responsible for maintainingrepression 

d. There are Polycomb repressive complexes: PRC1 and PRC2

e. PRC2 complexes contain histone deacetylases that inhibit transcription

f. PRC1 complex binds the methylated nucleosomes 

g. The PRC1 complex contains a ubiquitin ligase 

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#Question id: 29019

#Unit 11. Evolution and Behavior

If a population of fruit flies has an initial frequency of G equal to 0.3, calculate the proportionate contribution of genotypes to population from given data;

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#Question id: 15842

#Unit 8. Inheritance Biology

In the yeast cross of ade2 met14 his3 x + + +, a total of 120 tetrads are analyzed. The markers ade2, met14, and his3 are abbreviated a, m, and h and the wild type allele of each gene is indicated by +.

      

Given three locus from above, which locus shows the tetratype (T)