Q1 of 33 Page 10

The chromatin material is formed of

The chromatin material is comprised of DNA and histones. Inside the nucleus, the chromatin material condenses to form chromosomes during cell division. Chromosomes contain information for the inheritance of features from parents to next generation in the form of DNA (Deoxyribo Nucleic Acid) molecules.

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1

Fill in the blanks:

(i) Chromatin fibre is made up of DNA and ………………………….


(ii) The chromatids are attached to each other at ………………………….


(iii) DNA replicates in the ..………………………………... of the cell cycle.


(iv) Who first discovered the structure of DNA? ………………………….

 2

The term “Chromosomes” literally means

 1

Name the following:

The repeating components of each DNA strand lengthwise.

 1

Name the following:

The complex structure consisting of DNA strand and a core of histones.