MOLECULAR BASIS OF INHERITANCE - Quiz 13

DNA replication in eukaryotes differs from replication in bacteria because

• synthesis of the new DNA strand is from 3’ to 5’ in eukaryotes and from 5’ to 3’ in bacteria

• synthesis of the new DNA strand is from 5’ to 3’ in eukaryotes and from 3’ to 5’ in bacteria

• there are many replication forks in each eukaryotic chromosome and only one in bacterial DNA

• synthesis of the new DNA strand is from 5’ to 3’ in eukaryotes and is random in prokaryotes

The chemical nature of a gene is

• protein

• acid

• base

• none of these

Which of the following molecules functions to transfer information from one generation to the next?

• DNA

• mRNA

• tRNA

• Proteins

Tags

NGSS.HS-LS3-1

Mutations are

• Heritable changes in the sequence of DNA bases that produce an observable phenotype

• Heritable changes in the sequence of DNA bases

• Mistakes in the incorporation of amino acids into proteins

• Heritable changes in the mRNA of an organism

Tags

NGSS.HS-LS3-2

What are those structures that appear as ‘beads-on-string’ in the chromosomes when viewed under electron microscope?

• Base pairs

• Genes

• Nucleotides

• Nucleosomes

The unequivocal proof of DNA as the genetic material came from the studies on a

• Viroid

• Bacterial virus

• Bacterium

• Fungus

Tags

NGSS.HS-LS1-1

Which of the following is not the characteristic feature of genetic code

• Triplet nature

• Mostly universal

• Ambiguous

• Degeneracy

More than one initiation codon and termination codons are found in which RNA

• prokaryotic m-RNA

• Eukaryotic m-RNA

• Hetero nuclear RNA

• Ribosomal RNA

Taylor conducted the experiment to prove semiconservative mode of chromosome replication on :

• Drosophila melanogaster

• E. coli

• Vinca rosea

• Vicia faba

DNA-dependent RNA polymerase catalyzes transcription on one strand of the DNA which is called the :-

• Alpha strand

• Antistrand

• Template strand

• Coding strand