Which property of DNA double helix led Watson and Crick to hypothesise
semi-conservative mode of DNA replication? Explain.
If the sequence of the coding strand in a transcription unit is written
as follows:
5′-ATGCATGCATGCATGCATGCATGCATGC-3′
Write down the sequence of mRNA.
Why does the civilisation studied in this chapter have
several names? Discuss their significance.
If the sequence of one strand of DNA is written as follows:
5′-ATGCATGCATGCATGCATGCATGCATGC-3′
Write down the sequence of complementary strand in 5’®3′ direction.
If a double stranded DNA has 20 per cent of cytosine, calculate the per
cent of adenine in the DNA.
Group the following as nitrogenous bases and nucleosides:
Adenine, Cytidine, Thymine, Guanosine, Uracil and Cytosine.
Mention any two autosomal genetic disorders with their symptoms.
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