DNA polymorphism forms the basis of:
- Genetic mapping
- DNA fingerprinting
- Both Genetic mapping and DNA fingerprinting
- Translation
The Correct Option is B
Solution and Explanation
Top Questions on The DNA
- Which of the following statement(s) about eukaryotic DNA topoisomerase is/are correct?
- What is the fate of a piece of DNA carrying only gene of interest which is transfered in to an alien organism?
A. The piece of DNA would be able to multiply itself independently in the progeny cells of the organism.
B. It may get integrated into the genome of the recipient.
C. It may multiple and be inherited along with the host DNA.
D. The alien piece of DNA is not an integral part of chromasame.
E. It shows ability to replicate.
Choose the correct answer from the options given below: - The DNA present in chloroplast is:
- Hind II always cuts DNA molecules at a particular point called recognition sequence and it consists of:
- Arrange the following steps of ‘Polymerase chain Reaction’ in a correct sequence.
(A) Annealing of primers
(B) Amplified DNA
(C) Denaturation of DNA
(D) Extension of primers
Choose the correct answer from the option given below
Concepts Used:
discovery of dna
The discovery of DNA (deoxyribonucleic acid) as the genetic material of living organisms is a significant milestone in the field of biology. The discovery of DNA can be attributed to several scientists whose work collectively contributed to our understanding of its structure and function.
In the early 20th century, several researchers began investigating the nature of inheritance and the transfer of genetic traits. One important figure in this field was Gregor Mendel, an Austrian monk who conducted groundbreaking experiments with pea plants in the 1860s, laying the foundation for the study of genetics.
In the early 1950s, James Watson and Francis Crick, along with Rosalind Franklin and Maurice Wilkins, made the breakthrough discovery of the structure of DNA. Their work was primarily based on X-ray crystallography images obtained by Franklin and Wilkins, which hinted at the helical structure of DNA.
Using Franklin's data and their own modeling experiments, Watson and Crick proposed the double-helix structure of DNA in 1953. They suggested that DNA is composed of two complementary strands wound around each other in a spiral staircase-like structure, with the bases adenine (A) pairing with thymine (T), and guanine (G) pairing with cytosine (C).
This discovery provided insights into how genetic information is stored and transmitted from one generation to the next. It paved the way for a better understanding of DNA replication, protein synthesis, and the role of DNA in inheritance and evolution.
Watson, Crick, and Wilkins were awarded the Nobel Prize in Physiology or Medicine in 1962 for their discoveries related to the structure of DNA. Unfortunately, Franklin, who made significant contributions to the field, passed away in 1958 and was therefore ineligible for the Nobel Prize.
The discovery of DNA revolutionized biology and has had far-reaching implications in various fields, including medicine, agriculture, forensics, and biotechnology. It has led to advancements in gene sequencing, genetic engineering, and the understanding of genetic diseases, ultimately shaping our knowledge of life itself.
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