Question

17. Secondary constrictions present in chromosome are

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Answer 1

Answer:

Secondary constrictions are the constricted or the narrow region found at any point of the chromosome other than that of centromere. They also contain the genes for rRNA synthesis.

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Answer 2

ANSWER:

Secondary constrictions are the constricted or the narrow region found at any point of the chromosome other than that of centromere (primary constriction). ... The secondary constriction also contains the genes for rRNA synthesis (18S rRNA, 5.8S rRNA, and 28S rRNA). Genes for 5S rRNA are present on chromosome 1.