Define/Explain: Heterochromatin and Semiconservative $DNA$ replication.
(N/A) $(1)$ The chromatin that is more densely packed and stains dark is called Heterochromatin. It is transcriptionally inactive.
$(2)$ In semiconservative $DNA$ replication,the two strands of the $DNA$ double helix separate and each acts as a template for the synthesis of a new complementary strand. After the completion of replication,each $DNA$ molecule consists of one parental strand and one newly synthesized strand. This scheme is termed as semiconservative $DNA$ replication.
$(2)$ In semiconservative $DNA$ replication,the two strands of the $DNA$ double helix separate and each acts as a template for the synthesis of a new complementary strand. After the completion of replication,each $DNA$ molecule consists of one parental strand and one newly synthesized strand. This scheme is termed as semiconservative $DNA$ replication.
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