Evolutionary biology extends and amplifies the explanation of biological phenomena. It complements studies of the proximate causes (immediate, mechanical causes) of biological phenomena If we ask what causes a male bird to sing, the proximate causes include the action of testosterone or other hormones

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#Question id: 23112

#Unit 2. Cellular Organization

Chromatin on treatment with Mnase generates fragments, as the time and concentration of Mnase increase various fragments are observed choose the incorrect statement 

TLS Online TPP Program

#Question id: 23113

#Unit 2. Cellular Organization

Chromatin on digestion with Mnase can be result on centrifugation and electrophoresis, on sedimentation the following result is obtained 

TLS Online TPP Program

#Question id: 23114

#Unit 2. Cellular Organization

What is the minimum length to stabilize nucleosome 

TLS Online TPP Program

#Question id: 23115

#Unit 2. Cellular Organization

The assay which is used in DNA foot-printing to identify the nitrogenous base sequences

TLS Online TPP Program

#Question id: 23116

#Unit 2. Cellular Organization

Choose the correct statement 

a. The nucleosome is a disc with DNA organized into 22/3 turns around the core .

b. The nucleosome is a disc with DNA organized into 12/3 turns around the surface.

c. The nucleosome is a disc of 11 nm diameter and 6 nm height.

d. The nucleosome is a cylinder of 6 nm diameter and 11 nm height.

TLS Online TPP Program

#Question id: 23117

#Unit 2. Cellular Organization

Choose the correct statement of the following  

a. The nucleosome consists of approximately equal masses of DNA and histones (including H1). 

b. The four core histones are present in equal amounts in the cell.

c. H1 is half as abundant as the other histones, which is consistent with the finding that only one molecule of H1 can associate with a nucleosome.

d. One turn around the nucleosome takes 80 bp of DNA