Definitions/Explanation : Heterochromatin & Semiconservative $DNA$ replication

 

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$(1)$ The chromatin that is more densely packed and stained dark are called Heterochromatin. It is inactive.

$(2)$ The two of $DNA$ strands would separate and act as a template for the synthesis of new complementary strands. After the completion of replication, each $DNA$ molecule would have one parental and one newly synthesized strand. This scheme was termed as semiconservative $DNA$ replication.

Similar Questions

Which of the following statement is incorrect?

$A$ : Polypeptide sequences are dictated by $DNA$ and represented by $mRNA$.
$R$ : Sequence of amino acids in a polypeptide can be predicted by the exact sequence of nucleotides on the $mRNA$ and template $DNA$

Consider the following

1.Structural gene

2.Messenger $RNA$

3.Ribosomes

4.Transcription

5.Translation

Which of the following is the correct sequence for protein synthesis

Assertion : Replication and transcription occur in the nucleus but translation in the cytoplasm.

Reason : $m-RNA$ is transferred from the nucleus into the cytoplasm where ribosomes and amino acids are available for protein synthesis.

  • [AIIMS 2005]

Briefly describe the following:

$(a)$ Transcription

$(b)$ Polymorphism

$(c)$ Translation

$(d)$ Bioinformatics