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Dna Rna And Experiments On Genetic Material Free Doubts and Solutions

CBSE - XII Science - Biology - Molecular Basis of Inheritance

In DNA plane of one base pair stavk over the other in double helix this in addition provide stability to helical sturucture of DNA What does this line means

Asked by ashutosh25807 17th January 2018, 8:58 PM
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CBSE - XII Science - Biology - Molecular Basis of Inheritance

DNA is the genetic material in most organisms while only a few organisms have RNA as genetic material.Why
 

Asked by pksunilnair 3rd October 2017, 4:24 PM
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CBSE - XII Science - Biology - Molecular Basis of Inheritance

List the crieteria a molecule that can act as a genetic material must fulfill. Which one of the crieteria are best fulfilled by DNA or by RNA thus making one of them a better genetic material than the other ? explain.

Asked by pksunilnair 2nd October 2017, 9:31 PM
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CBSE - XII Science - Biology - Molecular Basis of Inheritance

in the medium where E.Coli was growing , lactose was added, which induced the lac operon .then why the lac operon shut down some time after addition of lactose in the medium?

Asked by pramodtalukdar 27th October 2016, 9:00 PM
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CBSE - XII Science - Biology - Molecular Basis of Inheritance

HOW HISTONE ACQUIRE POSITIVE CHARGE

Asked by anu Mishra 18th March 2016, 1:41 PM
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CBSE - XII Science - Biology - Molecular Basis of Inheritance

If we ignore the effect of crossing over, how many different haploid cells arise by meiosis in a diploid cell having 2n=12?
a) 8     b)16
c) 32    d)64
my teacher told the that the answer should be 64 but i think It's not correct. wwhat is answer? 

Asked by shubham.padamwar.3 16th January 2015, 7:56 PM
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CBSE - XII Science - Biology - Molecular Basis of Inheritance

Hershey and Chase conducted an experiment on T2 phage using radioisotopes. What were their observations and conclusions? 

Asked by Topperlearning User 16th June 2014, 4:40 PM
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CBSE - XII Science - Biology - Molecular Basis of Inheritance

Why is DNA molecule a more stable genetic material than RNA? Explain.

Asked by Topperlearning User 16th June 2014, 4:40 PM
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CBSE - XII Science - Biology - Molecular Basis of Inheritance

What are the two major functions of DNA?

Asked by Topperlearning User 16th June 2014, 4:40 PM
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CBSE - XII Science - Biology - Molecular Basis of Inheritance

A double-stranded DNA has 20% of cytosine. Calculate the percent of adenine in the DNA. Explain. 

Asked by Topperlearning User 16th June 2014, 4:40 PM
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CBSE - XII Science - Biology - Molecular Basis of Inheritance

Explain briefly what is meant by DNA ~ RNA ~ protein. 

Asked by Topperlearning User 16th June 2014, 4:40 PM
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CBSE - XII Science - Biology - Molecular Basis of Inheritance

Retroviruses do not follow the central dogma. Comment.

Asked by Topperlearning User 16th June 2014, 4:40 PM
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CBSE - XII Science - Biology - Molecular Basis of Inheritance

How did Hershey and Chase differentiate between DNA and protein in their experiment, while proving DNA is the genetic material?  

Asked by Topperlearning User 16th June 2014, 4:40 PM
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CBSE - XII Science - Biology - Molecular Basis of Inheritance

What are histones?  

Asked by Topperlearning User 16th June 2014, 4:40 PM
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CBSE - XII Science - Biology - Molecular Basis of Inheritance

Write the names of various nitrogenous bases found in RNA. 

Asked by Topperlearning User 16th June 2014, 4:40 PM
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CBSE - XII Science - Biology - Molecular Basis of Inheritance

What is a nucleosome?

Asked by Topperlearning User 16th June 2014, 4:40 PM
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