TLS Online TPP Program

#Question id: 17998


Eukaryotic mRNA species are isolated by using

#Unit 13. Methods in Biology
  1. paper chromatography
  2. affinity chromatography on resin columns
  3. by SDS PAGE gel chromatography
  4. affinity chromatography on oligo(dT)-cellulose columns
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TLS Online TPP Program

#Question id: 23566

#Unit 8. Inheritance Biology

C-bands involved for the detection of__

TLS Online TPP Program

#Question id: 23565

#Unit 8. Inheritance Biology

Sequence rich with cytosine and guanine base pairs only that are detected by

TLS Online TPP Program

#Question id: 23564

#Unit 8. Inheritance Biology

Match the following

 

      Column I

 

      Column II

 

A) G-bands

 

i) viewing the chromosomes under ultraviolet light results from differences in the relative amounts of cytosine–guanine (C–G) and adenine–thymine base pairs

 

B) R-bands

 

ii) which are regions of DNA occupied by centromeric heterochromatin

 

C) Q-bands

 

iii) staining the telomere DNA  specifically

 

D) C-bands

 

iv) distinguish areas of DNA that are rich in adenine–thymine (A–T) base pairs

 

E) T-bands

 

v) reverting the dark bands by using saltingout method

TLS Online TPP Program

#Question id: 23289

#Unit 8. Inheritance Biology

Preparation and staining techniques help to distinguish among chromosomes of similar size and shape, this staining techniques also distinguish the banding pattern of the chromosome at which stage of cell cycle?

TLS Online TPP Program

#Question id: 23288

#Unit 8. Inheritance Biology

The staining of chromosomes with a special dye called Giemsa reveals G bands, which distinguish

TLS Online TPP Program

#Question id: 23287

#Unit 8. Inheritance Biology

Chromosome mutations can be grouped into three basic categories:
I) Chromosome rearrangements
II) Aneuploidy
III) Polyploidy
these mutation alters the number and structure of chromosomes such as,
 a) One or more individual chromosomes are added or deleted
b) The loss of a chromosomal segment
c) A piece of a chromosome might be duplicated, deleted, or inverted
d) One or more complete sets of chromosomes are added
e) In which one or more copies of a DNA segment is produced
Find out the correct pairing of chromosomal mutations,