Recent questions tagged exemplar

Give an example of convergent evolution and identify the features towards which they are converging.

asked Jul 6, 2017 by pady_1

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How do we compute the age of a living tree?

asked Jul 6, 2017 by pady_1

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What are we referring to when we say 'simple organisms' or 'complex organism'?

asked Jul 6, 2017 by pady_1

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Did aquatic life forms get fossilized? If yes, where do we get such fossils?

asked Jul 6, 2017 by pady_1

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What were the characteristics of life forms that had been fossilized?

asked Jul 6, 2017 by pady_1

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Define transformation in Griffith’s experiment. Discuss how it helps in the identification of DNA

asked Jul 6, 2017 by pady_1

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"There is a paternity dispute for a child". Which technique can solve the problem. Discuss the princ

asked Jul 6, 2017 by pady_1

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Discuss the process of translation in detail.

asked Jul 6, 2017 by pady_1

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<div>Give an account of the post transcriptional modifications of a eukaryotic mRNA.</div><div>Post

asked Jul 6, 2017 by pady_1

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Give an account of Hershey and Chase experiment. What did it conclusively prove? If both DNA and pro

asked Jul 5, 2017 by pady_1

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What background information did Watson and Crick have made available for developing a model of DNA?

asked Jul 5, 2017 by pady_1

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There is only one possible sequence of amino acids when deduced from a given nucleotides. But multip

asked Jul 5, 2017 by pady_1

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You are repeating the Hershey - Chase experiment and are provided with two isotopes. $^{32}P$ and $^

asked Jul 5, 2017 by pady_1

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Recall the experiments done by Fredrick Griffith, Avery, Macleod and McCarty, where DNA was speculat

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During DNA replication, why is it that the entire molecule does not open in one go? Explain replicat

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Define a cistron. Giving examples differentiate between monocistronic and polycistronic transcriptio

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Who revealed biochemical nature of the transforming principle? How was it done?<br>

asked Jul 5, 2017 by pady_1

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Name a few enzymes involved in DNA replication other than DNA polymerase and ligase. Name the key fu

asked Jul 5, 2017 by pady_1

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What are the functions of (i) methylated guanosine cap (ii) poly “A” tail in a matured RNA.

asked Jul 5, 2017 by pady_1

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Would it be appropriate to use DNA probes such as VNTR in DNA finger printing of a bacteriophage?

asked Jul 5, 2017 by pady_1

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A low level of expression of lac operon occurs at all the time. Can you explain the logic behind thi

asked Jul 5, 2017 by pady_1

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A single base mutation in a gene may not ‘always’ result in loss or gain of function. Do you thi

asked Jul 5, 2017 by pady_1

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In a nucleus, the number of ribonucleoside trophosphates is 10 times the number of deoxy X 10 ribonu

asked Jul 5, 2017 by pady_1

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Based on your understanding of genetic code, explain the formation of any abnormal hemoglobin molecu

asked Jul 5, 2017 by pady_1

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What is DNA polymorphism? Why is it important to study it?

asked Jul 5, 2017 by pady_1

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What is the cause of discontinuous synthesis if DNA on one of the parental strands of DNA? What happ

asked Jul 5, 2017 by pady_1

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Distinguish between heterochromatin and euchromatin. Which of the two is transcriptionally active?

asked Jul 5, 2017 by pady_1

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Name any three viruses which have RNA as the genetic material.

asked Jul 5, 2017 by pady_1

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During in vitro synthesis of DNA, a researcher used 2', 3'-dideoxycitidine triphosphate as raw nucle

asked Jul 5, 2017 by pady_1

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What would happen if histones were to be mutated and rich in acidic amino acids such as aspartic aci

asked Jul 5, 2017 by pady_1

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Retroviruses do not follow central dogma. Comment.

asked Jul 5, 2017 by pady_1

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How was it concluded that genes are located on the chromosomes?

asked Jul 5, 2017 by pady_1

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Define aneuploidy. How is it different from polyploids? Describe the individuals having the followin

asked Jul 5, 2017 by pady_1

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Discuss the significance of heavy isotope of nitrogen in the Messelson and Stahl's experiment.

asked Jul 4, 2017 by pady_1

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What is the function of histones in DNA packaging?

asked Jul 4, 2017 by pady_1

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a) In humans, males are heterogametic  and female are homogametic. Explain. Are there any examp

asked Jul 4, 2017 by pady_1

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Discuss in detail the contributions of Morgan and Sturtvant in the area of genetics.

asked Jul 4, 2017 by pady_1

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Discuss why Drosophila has been used extensively for  genetical studies?

asked Jul 4, 2017 by pady_1

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If a father and son are both defective in red - green colour vision, is it likely that the son inher

asked Jul 4, 2017 by pady_1

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A plant with red flowers was crossed with another plant with yellow flowers. If $F_1$ showed all flo

asked Jul 4, 2017 by pady_1

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What is Down's syndrome? Give its symptoms and cause. Why is it the chances of having a child with D

asked Jul 4, 2017 by pady_1

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How does a mutagen induce mutation? Explain with an example.

asked Jul 4, 2017 by pady_1

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In our society a woman is often blamed for not bearing a male child. Do you think is it right? Justi

asked Jul 3, 2017 by pady_1

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For the expression of traits genes provide only the potentially and the environment provides the opp

asked Jul 3, 2017 by pady_1

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In a monohybrid cross of plants with red and white flowered plants, Mendel got only pink flowered pl

asked Jul 3, 2017 by pady_1

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Why is the frequency of red green colour blindness is many times higher in males than in females?

asked Jul 3, 2017 by pady_1

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What are the characteristics of a true breeding line?

asked Jul 3, 2017 by pady_1

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How alleles of a particular gene are differ from each other? Explain its significance.

asked Jul 3, 2017 by pady_1

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In a Mendelian monohybrid cross, the $F_1$ generation shows identical genotypic and phenotypic ratio

asked Jul 3, 2017 by pady_1

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A person has to perform crosses for the purpose of stdying inheritance of a few traits / characters.

asked Jun 30, 2017 by pady_1

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