Which of the following is the basic repeating unit of chromatin?
Gene
Chromosome
Centromere
Nucleosome
Related Questions
Polytene chromosomes, found in certain insect tissues, exhibit distinct banding patterns. These bands represent:
Individual genes arranged linearly along the chromosome.
Regions of heterochromatin exclusively.
Regions where DNA replication has been halted prematurely.
Regions of highly condensed chromatin corresponding to inactive genes interspersed with less condensed regions of active genes.
The shorter and longer arms of a submetacentric chromosome are referred to as
S – arm and l – arm respectively
p – arm and q – arm respectively
q – arm and p – arm respectively
m – arm and n – arm respectively
Spindle fibres attach on to:
Telomere of the chromosome
Kinetochore of the chromosome
Centromere of the chromosome
Kinetosome of the chromosome
When the Centrometre is situated in the middle of two equal arms of chromosomes, the chromosome is referred as:
Sub-metacentric
Acrocentric
Metacentric
Telocentric
The large puffs on polytene chromosomes, known as Balbiani rings, are primarily involved in:
RNA synthesis
DNA replication
Protein degradation
Chromosome condensation
The kinetochore is a complex structure composed primarily of:
Lipids
Carbohydrates
Nucleic acids
Proteins
Certain histone modifications are associated with actively transcribed genes. Which of the following combinations is MOST likely to be found in the nucleosomes of such genes?
Methylation of H3K9 and H3K27; Deacetylation of H3 and H4
Phosphorylation of H2AX; Trimethylation of H3K9
Acetylation of H3 and H4; Trimethylation of H3K4
Ubiquitination of H2A; Trimethylation of H3K27
Which of the following is the basic repeating unit of chromatin?
Gene
Chromosome
Centromere
Nucleosome
Which of the following is NOT a characteristic of a metacentric chromosome?
Two arms of equal length
Centromere located in the middle
Centromere located near one end
Forms a V-shape during cell division
The association of histone H1 with a nucleosome indicates:
The DNA double helix is exposed
Transcription is occurring
DNA replication is occurring
The DNA is condensed into a Chromatin Fibre
