Question

match the columns
1 2
A.splicing - Lac operon
B.Okazaki
fragments - Lagging strands
C.Jacob and
Monad - Lactose
D.Inducer - Removal of intron​

Answer 1

a_removal of intron

b_lagging strand

c_lac operon

d_lactose

Answer 2

The following items are matched as follows:

A.- Removal of the intron​, B.-Lagging strands, C.-Lac Operon, D.- Lactose

• The process of removal of introns from the primary mRNA during transcription and joining of the coding regions/transcribing regions - exons, is called Splicing.
• The lagging strand is the 3'→5' strand of DNA. It is called so as the daughter DNA strand formed by its replication is formed in fragments called Okazaki fragments, named after the scientist who discovered it.
• Okazaki fragments of 3'→ 5' daughter DNA strand are formed as the DNA Polymerase can Polymerize nucleotides only in the 5'→3' direction.
• Jacob and Monad discovered Lac Operon.
• Lac Operon is a set of genes transcribed together that function in the digestion or conversion of Lactose to Glucose and Galactose.
• The inducer of Lac operon is Lactose.
• It consists of three genes, z, y, and a which transcribe galactosidase, permease, and transacetylase respectively. Permease maintains the flow of lactose into the cell.
• The genes are transcribed only in the presence of lactose which binds to the repressor which in turn binds to the operator of the operon preventing binding of RNA polymerase and hence transcription of the gene.