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Heterochromatin
Heterochromatin is a tightly packed form of DNA or condensed DNA, which comes in multiple varieties. These varieties lie on a continuum between the two extremes of constitutive heterochromatin and facultative heterochromatin. Both play a role in the expression of genes.
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What is a chromosome in its condensed form called?
Chromatin
Does karyotype shows DNA in its choromatin form?
A karyotype displays the complete set of chromosomes in an organism, typically during the metaphase stage of cell division when chromosomes are most condensed and visible. At this stage, DNA is not in its chromatin form; instead, it is tightly packed into distinct, recognizable structures called chromosomes. Thus, a karyotype represents DNA in its highly condensed form rather than its relaxed chromatin state.
Why chromosome observed in prophase but not in interphase?
Chromosomes are condensed and visible in prophase due to the coiling of DNA to form compact structures. In interphase, chromosomes are in their less condensed state, called chromatin, making them less visible under a microscope. This allows for gene expression and DNA replication to occur before cells enter mitosis and condense their chromosomes again.
What happens to chromatin during interphase?
During interphase, chromatin exists in a less condensed form, allowing for gene expression and DNA replication. It is loosely organized in the nucleus, ready to be transcribed into RNA for protein synthesis. This less condensed form of chromatin helps facilitate various cellular processes that occur during interphase.
What is the condensed form of DNA referred as?
The highly condensed forms of DNA (and proteins) are known as chromosomes.
Why are chromosomes not visible during interphase?
During interphase, chromosomes are not visible because they are in a less condensed form called chromatin. Chromatin is spread out and not easily distinguishable as individual chromosomes under a microscope.
Is chromatin condensed during cell division?
Yes, chromatin is condensed during cell division to form distinct chromosomes.
What is the relationship between chromatin and chromosomes?
Chromatin is a complex of DNA and proteins in the nucleus of a cell, while chromosomes are condensed and visible structures of chromatin during cell division. Chromosomes are formed from condensed chromatin to allow for organized and efficient segregation of genetic material. Essentially, chromosomes are the condensed form of chromatin.
What is a chromosome in its condensed form called?
Chromatin
Where chromosomes are present?
Chromosomes are thick,condensed, ribbon-like structures which are visible within the nucleus at the time of cell division. They are the condensed form of chromatin fibres which are present in the nucleoplasm of the nucleus.
Is it in telophase that the chromosomes assume their less condensed chromatin form?
It's TrueTrue
Does karyotype shows DNA in its choromatin form?
A karyotype displays the complete set of chromosomes in an organism, typically during the metaphase stage of cell division when chromosomes are most condensed and visible. At this stage, DNA is not in its chromatin form; instead, it is tightly packed into distinct, recognizable structures called chromosomes. Thus, a karyotype represents DNA in its highly condensed form rather than its relaxed chromatin state.
Why chromosome observed in prophase but not in interphase?
Chromosomes are condensed and visible in prophase due to the coiling of DNA to form compact structures. In interphase, chromosomes are in their less condensed state, called chromatin, making them less visible under a microscope. This allows for gene expression and DNA replication to occur before cells enter mitosis and condense their chromosomes again.
Which three phases are individual chromosomes no longer visible?
During interphase, chromosomes are not visible as distinct structures. Instead, the DNA is in the form of chromatin, a less condensed state where individual chromosomes cannot be seen.
What happens to chromatin during interphase?
During interphase, chromatin exists in a less condensed form, allowing for gene expression and DNA replication. It is loosely organized in the nucleus, ready to be transcribed into RNA for protein synthesis. This less condensed form of chromatin helps facilitate various cellular processes that occur during interphase.
What is the condensed form of DNA referred as?
The highly condensed forms of DNA (and proteins) are known as chromosomes.
What are the highly condensed portion of chromatin which appear as very dark areas in a transmission electron micrograph?
which is the loosely condensed chromatin where genes are expressed
