Biology
Fill in the blanks:
- Chromatin fibre is made up of DNA and …………… .
- The two sister chromatids of a chromosome are attached to each other at …………… .
- The structure of DNA was first discovered by…………… .
- The three components of a nucleotide are …………… and …………… .
- DNA strand wound around a histone octamer forms a complex called a …………… .
- A specific sequence of nucleotides on a chromosome constitutes a …………… .
Answer
- Chromatin fibre is made up of DNA and Histones .
- The two sister chromatids of a chromosome are attached to each other at centromere .
- The structure of DNA was first discovered by Rosalind Franklin .
- The three components of a nucleotide are phosphate, sugar and nitrogenous base .
- DNA strand wound around a histone octamer forms a complex called a nucleosome .
- A specific sequence of nucleotides on a chromosome constitutes a gene .
Related Questions
The chromatin material is formed of
- DNA only
- DNA and Histones
- Histones only
- Nucleotides
The term "chromosomes" literally means
- Inherited bodies
- Twisted threads
- Coloured bodies
- Shining threads
The number of chromosomes in a certain type of cell division is halved. This kind of cell division occurs in
- only testis
- only ovary
- both ovary and testis
- all body cells
Synthesis phase in the cell cycle is called so for the synthesis of more of
- RNA
- RNA and proteins
- DNA
- Glucose