Molecular Basis of Inheritance MCQ Questions & Answers in Botany

31. In eukaryotes, after transcription of mRNA, some of its nucleotides are removed before it is translated into polypeptide. The nucleotides which are removed from mRNA are called

A exons

B upstream sequences

C unusual bases

D introns

Discuss Question

32. During translation initiation in prokaryotes, a GTP molecule is needed in

A association of 50 S subunit of ribosome with initiation complex

B formation of formyl-met-tRNA

C binding of 30 S subunit of ribosome with mRNA

D association of 30 S-mRNA with formyl- met-tRNA

Discuss Question

33. One of the most frequently used techniques in DNA fingerprinting is

A AFLP

B VNTR

C SSCP

D SCAR

Discuss Question

34. The final proof for DNA as the genetic material came from the experiments of:

A Hershey and Chase

B Avery, Mcleod and McCarty

C Hargobind Khorana

D Griffith

Discuss Question

35. Under which of the following conditions will there be no change in the reading frame of following mRNA ?
5' AACAGCGGUGCUAUU 3'

A Insertion of $$G$$ at $${5^{th}}$$ position

B Deletion of $$G$$ from $${5^{th}}$$ position

C Insertion of $$A$$ and $$G$$ at $${4^{th}}$$ and $${5^{th}}$$ positions respectively

D Deletion of GGU from $${7^{th}},{8^{th}}$$ and $${9^{th}}$$ positions

Discuss Question

36. Which one of the following is the starter codon?

A AUG

B UGA

C UAA

D UAG

Discuss Question

37. Jacob and Monod studied lactose metabolism in E.coli and proposed operon concept. Operon concept is applicable for

A all prokaryotes

B all prokaryotes and some eukaryotes

C all prokaryotes and all eukaryotes

D all prokaryotes and some protozoans

Discuss Question

38. Molecular basis of organ differentiation depends on the modulation in transcription by

A ribosome

B transcription factor

C anticodon

D RNA polymerase

Discuss Question

39. 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?

A 11

B 33

C 333

D 1

Discuss Question

40. At time of organogenesis genes regulate the process at different levels and at different time due to

A promoter

B regulator

C intron

D exon

Discuss Question

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

31. In eukaryotes, after transcription of mRNA, some of its nucleotides are removed before it is translated into polypeptide. The nucleotides which are removed from mRNA are called

32. During translation initiation in prokaryotes, a GTP molecule is needed in

33. One of the most frequently used techniques in DNA fingerprinting is

34. The final proof for DNA as the genetic material came from the experiments of:

35. Under which of the following conditions will there be no change in the reading frame of following mRNA ? 5' AACAGCGGUGCUAUU 3'

36. Which one of the following is the starter codon?

37. Jacob and Monod studied lactose metabolism in E.coli and proposed operon concept. Operon concept is applicable for

38. Molecular basis of organ differentiation depends on the modulation in transcription by

39. 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?

40. At time of organogenesis genes regulate the process at different levels and at different time due to

Practice More MCQ Question on Biology Section

35. Under which of the following conditions will there be no change in the reading frame of following mRNA ?
5' AACAGCGGUGCUAUU 3'