List of top Plant Sciences Questions on Gene expression

Given below are two statements:
• [Statement (I):] Transcription is the process in which a gene's DNA sequence is transcribed to make an RNA molecule. 
• [Statement (II):] For transcription, RNA polymerase binds to the promoter situated upstream of the gene to be transcribed. In light of the above statements, choose the most appropriate answer from the options given below. 
 

Match List-I with List-II
List-I (Operon component):
(A). Promoter
(B). Operator
(C). Structural gene
(D). Regulatory gene
List-II (Role):
(I). Produces repressor protein
(II). Site where repressor binds
(III). Code for functional proteins
(IV). Binding site for RNA polymerase
Who proposed 'Operon' model for gene regulation in bacteria?
In the case of Lac operon, the presence of glucose in the cell/growing media will lead to
The process of 'turning on the expression of genes' due to environmental conditions is called
Which of the following is true about the start codon in the genetic code dictionary ?
The concept of genes is not static but dynamic. Arrange the changing concept of genes chronologically - from earliest to the latest
(A) Gene is a sequence of nucleotides encoding functional products
(B) Isolation of nuclein by Friedrich Miescher
(C) One gene-one metabolic pathway block
(D) One gene-one polypeptide
Choose the correct answer from the options given below:
A female Drosophila contains two XX chromosomes while a male Drosophila contains only one X chromosome. However, the amounts of enzymes or even RNA produced by the X-linked genes in the females are equal to those in the males. The reasons are -
(A) The translation machinery in the female is not as efficient as that in the male Drosophila
(B) The X-linked genes in the female Drosophila are highly regulated to make a balance in the expression of genes between males and females
(C) One X-chromosome in the female Drosophila is inactivated
(D) The Y-chromosome in the male Drosophila acts as an X-chromosome to make a balance in product development.
Choose the correct answer from the options given below :
A nonsense mutation involves the creation of a an -