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प्रश्न
From their examination of the structure of DNA, What did Watson and Crick infer about the probable mechanism of DNA replication, coding capability, and mutation?
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उत्तर
Inference of Watson and Crick on DNA replication:
They concluded that each of the DNA strand in a helix act as template during DNA replication leading to formation of new daughter DNA molecules, which are complementary to parental strand, (i.e., Semi-conservative method of replication).
Inference on coding capability:
During transcription, the genetic information in the DNA strand is coded to mRNA as complementary bases, (except for uracil in place of thymine in RNA).
Inference on mutation:
Any changes in the nucleotide sequence of DNA leads to corresponding alteration in aminoacid sequence of specific protein thus confirming the validity of genetic code.
संबंधित प्रश्न
As the base sequence present on one strand of DNA decides the base sequence of other strands; this strand is considered as ______.
Meselson and Stahl’s experiment proved ______.
DNA replication begins at specific sites situated on the molecule. Such sites are called ____________.
Enzyme ______ brings about the DNA unwinding by breaking weak hydrogen bonds in the vicinity of origin.
Nucleolus is a major center for:
Match the following column.
| Column - I | Column - II |
| (A) DNA structure | 1. Muller and stadder |
| (B) Semiconservative replication of DNA | 2. Beadle and partum |
| (C) One gene-one enzyme theory | 3. Watson and crick |
| (D) Induction of mutation | 4. Massillon and stahl |
Which of the following reaction is required for proofreading during DNA replication by DNA polymerase III?
Characteristics unique to DNA are ______.
The sequence of nitrogenous bases on DNA molecule is ATCGA. Which of the following is the correct complementary sequence of nitrogenous bases on mRNA molecule?
Which of the following statement is correct regarding the process of replication in E.coli?
