NEET BIOLOGY

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GENETICS AND EVOLUTION

MOLECULAR BASIS OF INHERITANCE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
At a specific area of a chromosome, the sequence of nucleotides below is present where the chain opens to form a replication fork:3’ C C T A G G C T G C A A T C C 5’An RNA primer is formed starting at the red T of the template. Which of the following represents the primer sequence?
A
5’ G C C T A G G 3’
B
5’ A C G U U A G G 3’
C
5’ A C G T T A G G 3’
D
3’ G C C T A G G 5’
Explanation: 

Detailed explanation-1: -Locus. Locus is a term that we use to tell us where on a chromosome a specific gene is. So it’s really the physical location of a gene on a chromosome.

Detailed explanation-2: -DNA replication begins at a specific sequence of nucleotides called the origin of replication. This facilitates DNA synthesis in both eukaryotic and prokaryotic genomes, as well as in plasmids and other vectors.

Detailed explanation-3: -Specific sequence of nucleotides on a chromosome constitutes a gene. Explanation: A gene can be described as a hereditary molecule which is made up of a specific part of DNA or specific nucleotide sequence.

Detailed explanation-4: -One strand is synthesized continuously in the direction of the replication fork; this is called the leading strand. The other strand is synthesized in a direction away from the replication fork, in short stretches of DNA known as Okazaki fragments. This strand is known as the lagging strand.

There is 1 question to complete.
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