DNA fragments are

• Positively charged

• Negatively charged

• Neutral

• Neutral

The association of histone H1 with a nucleosome indicates:

• Transcription is occurring

• DNA replication is occurring

• The DNA is condensed into a Chromatin Fibre

• The DNA is condensed into a Chromatin Fibre

Thalassemia and sickle cell anemia are caused due to a problem in globin molecule synthesis. Select the correct statement

• Both are due to a qualitative defect in globin
  chain synthesis

• Both are due to a quantitative defect in globin chain synthesis

• Thalassemia is due to less synthesis of globin molecules

• Thalassemia is due to less synthesis of globin molecules

All of the following are part of an operon except

• an operator

• structural genes

• a promoter

• an enhancer

If there are 999 bases in an RNA that codes for a protein with 333 amino acids, and the base at position 901 is deleted such that the length of the RNA becomes 998 bases, how many codons will be altered?

• 1

• 11

• 33

• 33