Advertisement

Given below is the diagram of a bacteriophage in which one of the options, all the four parts A, B, C and D are correct?

  • A

    B

    C

    D

    Tail fibres

    Head

    Sheath

    Collar

  • A

    B

    C

    D

    Sheath

    Collar

    Head

    Tail fibres

  • A

    B

    C

    D

    Head

    Collar

    Sheath

    Tail fibres

  • A

    B

    C

    D

    Head

    Collar

    Sheath

    Tail fibres


C.

A

B

C

D

Head

Collar

Sheath

Tail fibres

Plasmids are the extrachromosomal DNA found in bacterial cells. These are commonly used as vectors in genetic engineering programmes because these have the capacity of binding with eukaryotic DNA.
A bacteriophage is a virus that is parasitic within a bacterium. These also, are the important tools in genetic engineering s cloning vectors.

266 Views

Advertisement

What is not true for genetic code?

  • A condon in mRNA is read in a non-contiguous fashion

  • It is nearly universal 

  • It is degenerate

  • It is degenerate


Gel electrophoresis is used for 

  • cutting of DNA into fragments

  • separation of DNA fragments according to their size

  • construction of recombinant DNA by joining with cloning vectors

  • construction of recombinant DNA by joining with cloning vectors


Semiconservative replication of DNA was first demonstrated in

  • Drosophila melanogaster

  • Escherichia Coli

  • Streptococcus pneumoniae

  • Streptococcus pneumoniae


Transgenic plants are

  • produced by a somatic embryo in an artificial medium

  • generated by introducing foreign DNA into a cell and regenerating a plant from that cell

  • Produced by protoplast fusion in the artificial medium

  • Produced by protoplast fusion in the artificial medium


First 12 13 14 Last
Advertisement