Experiments conducted by Francisco Ayala with fruit flies and by David Pimentel with houseflies and blowflies have demonstrated the rather interesting phenomenon that __________.

TLS Online TPP Program

#Question id: 27511

#Unit 2. Cellular Organization

Which of the following is true when a Intercalation of ethidium ion into the DNA takes place

a. It unwind the two base pair by 260

b. Reduces the normal rotation per base pair from 360 to 100

c. Increases the normal rotation per base pair from 100 to 360

d. It first removes the negative supercoils and then introduces positive supercoils

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#Question id: 27512

#Unit 2. Cellular Organization

If a B-DNA having superhelical density  is -0.05 and the value of LK = 200, then what will be the length of DNA

TLS Online TPP Program

#Question id: 27513

#Unit 2. Cellular Organization

Which of the following chemical reagent is used to measure the effect of nicking the DNA

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#Question id: 27514

#Unit 2. Cellular Organization

Which of the following Histone is involved in stimulates formation of the 30 nm fiber

TLS Online TPP Program

#Question id: 27530

#Unit 1. Molecules and their Interaction Relevant to Biology

Match the Group 1 with appropriate solution of Group 2

Group 1                                                  Group 2

(1) Agar                                               (P)  Plant cell wall

(2) Raffinose                                       (Q)  Trisaccharides 

(3) Cellulose                                       (R)  Xanthomonas Compestris

(4) Xanthum Gum                             (S) seaweeds 

TLS Online TPP Program

#Question id: 27548

#Unit 1. Molecules and their Interaction Relevant to Biology

Desmosine is formed from