General

What are Genes and DNA?

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  • In the nucleus, there are tangled thread-like structures called Chromatin fibres which enclose the genetic material within them.
  • When the cell has to divide, these long threads coil themselves to form a compact structure called the Chromosome. So, chromosomes and chromatin are the same things.

What are Genes and DNA

  • The chromosomes are made up of smaller functional segments called Genes which form the basis of heredity in all
  • The similarities and variations that organisms have with their parents are because of genes.
  • Genes are made up of the molecules of Deoxyribonucleic acid (DNA).

DNA

Summary

Nucleus
  • The controlling unit of the cell is called the Nucleus.
  • It is located at the centre of the cell and governs the functions of other organelles.
  • The nucleus has its own jelly-like fluid called the Nucleoplasm.
Genes and DNA
  • The chromosomes are made up of smaller important segments and functional units called Genes.
  • Genes are made up of molecules of Deoxyribonucleic acid (DNA).

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