Structure of Chromosomes
Trending Questions
The primary constriction of a chromosome is indicated by
Chromocentre
Centromere
Satellite
Telomere
What do you mean by polytene chromosome? Where are such chromosomes found?
What are those structures that appear as 'beads-on-string' in the chromosomes when viewed under an electron microscope?
Genes
Nucleotides
Nucleosomes
Base pairs
- Contraction of continuous fibres
- Separation of sister chromatids
- Divisions of centromere in each chromosome
- Disappearance of nuclear membrane
- n
- 2n
- 3n
- n/2
- Chromatid
- Telomere
- Centromere
- Chromomere
- They are chromosomes which have developed from standard chromosomes
- They are formed due to repeated rounds of DNA replication without any cell division and are held together at a single point,
- Polytene chromosomes are, involved in intense secretory functions.
- They are cells that contain multiple sets of chromosomes and not held together at a single point.
- Nucleosomes
- Chromatin fibres
- Chromosomes
- DNA
- Chromatids
Chromosomes are pinched off at the ends. These are called _____.
Chromatin
Satellite chromosomes
Histones
Sister chromatids
What are those structures that appear as 'beads-on-string' in the chromosomes when viewed under electron microscope?
Genes
Base pairs
Nucleosomes
Nucleotides
Early anaphase is characterized by the
Contraction of continuous fibres
Separation of sister chromatids
Divisions of centromere in each chromosome
All of these
- Secondary constriction only
- Primary constriction only
- Tertiary construction only
- Both primary and secondary constriction
- Movement of chromosomes towards poles
- Cytoplasmic cleavage
- Crossing over
- Transcription
- Chromosome - DNA - Chromatin - Nucleosome
- DNA - Nucleosome - Chromatin - Chromosome
- Chromatin - Nucleosome - Chromosome - DNA
- DNA - Chromosome - Chromatin - Nucleosome