Chromatin is actually a condensed form that is formed by the combination of DNA and proteins. The DNA is wrapped around the histones which are nuclear proteins. This tight packing enables the genetic material to fit inside such a small nucleus.
The phenomenon in which the chromatin material changes its highly condensed state to a less condensed form is known as chromatin remodeling. In this way, the chromatin acquires a transcriptionally accessible state. The proteins that are responsible for the process of transcription approach the DNA and hence the gene expression is controlled.
Meiotic nondisjunction is much more likely than mitotic nondisjunction. Based on
A woman who is heterozygous, Bb, has brown eyes;
Explain why familial breast cancer shows a dominant pattern of inheritance in
How is an F′ factor different from an F factor?
With regard to the timing of conjugation, explain why the recipient
The raw material for evolution is random mutation. Discuss whether or
Why is an antibody used in this experiment? From
Explain the type of speciation (allopatric, parapatric, or sympatric
In fruit flies, curved wings are recessive to straight wings,
A recessive allele in mice results in an unusally long neck.
