Practice Questions

TLS Online TPP Program

#Question id: 12288

One way to understand how early environment influences differing behaviours in similar species is through the ? cross- fostering? Experimental technique. Suppose that the curly- whiskered mud rat differs from the bald mud rat in several ways, including being much more aggressive. How would you set up a cross- fostering experiment to determine if environment plays a role in the curly- whiskered mud rat's aggression?

#Unit 10. Ecological Principles

You would cross curly- whiskered mud rats and bald mud rats and hand- rear the offspring.
You would place new-born curly- whiskered mud rats with bald mud rat parents, place new-born bald mud rats with curly- whiskered mud rat parents, and let some mud rats of both species be raised by their own species. Then compare the outcomes.
You would remove the offspring of curly- whiskered mud rats and bald mud rats from their parents and raise them in the same environment.
You would see if curly- whiskered mud rats bred true for aggression.

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TLS Online TPP Program

#Question id: 23110

#Unit 2. Cellular Organization

Individual nucleosomes can be obtained by treating chromatin with the endonuclease micrococcal nuclease (MNase), which cuts the DNA between nucleosomes, a region known as

TLS Online TPP Program

#Question id: 23111

#Unit 2. Cellular Organization

Choose the correct option

a. Individual nucleosomes can be obtained by treating chromatin with the endonuclease micrococcal nuclease (MNase), which cuts the DNA between nucleosomes, a region known as H2A-H2B dimer region.

b. Individual nucleosomes can be obtained by treating chromatin with the endonuclease micrococcal nuclease (MNase), which cuts the DNA between nucleosomes, a region known as linker DNA.

c. Mononucleosomes typically have 200 bp DNA. End-trimming reduces the length of DNA first to 165 bp and then generates core particles with 146 bp.

d. Mononucleosomes typically have 200 bp DNA. End-trimming reduces the length of DNA first to 165 bp and then generates core particles with 200 bp.

TLS Online TPP Program

#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