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Similarity between DNA sequences of two eukaryotic species is used to predict their evolutionary relatedness, pointing to a shared ancestry. In an attempt to evaluate this relatedness, a group of researchers sequenced and compared two proteins with the same function from the two species. The corresponding DNA and RNA sequences were also compared to decipher their relatedness. Based on this information, the correct option is
(a)Similarity in exons, but not necessarily in introns, is reflective of divergent evolution
(b)Similarity in the protein sequence, but not in the corresponding RNA or DNA sequence can be an example of divergent evolution
(c)Similarity in introns, but not in exons, is reflective of convergent evolution
(d)Though the overall protein sequences are not similar, the conservation of active site residues cannot be due to convergent evolution

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Important Questions on Molecular Basis of Inheritance
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Match the animals of Column with Column and select the correct options among the following:
Column- | Column- | ||
replication | polymerase | ||
Translation | polymerase | ||
Translation | Reverse transcriptase | ||
Transcription | Aminoacyl synthetase |
Select the code for the correct answer from the options given below.

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DNA -ATGCATGCATGC -

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Two of the following statements are correctly defined. Identify the correct combination
i) Conversion of hnRNA to mRNA - processing
ii) Removal of introns and joining of exons - splicing
iii) Addition of adenylate residues to - end in a template dependent manner - Tailing
iv) Methyl adenosine triphosphate is added to - end of hnRNA - capping

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A) Expressed sequences of eukaryotic genes are exons
B) Intervening gene sequences of eukaryotes that do not appear in processed RNA are cistrons
C) Process of removal of introns and joining of exons in defined order is splicing
D) Monocistronic transcriptional unit has only exons

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Write a possible RNA strand that can be transcribed from the above DNA molecule formed.

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In the given transcription unit, identify the regions and respectively. Coding strand

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