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.
How is an F′ factor different from an F factor?
Meiotic nondisjunction is much more likely than mitotic nondisjunction. Based on
In fruit flies, curved wings are recessive to straight wings,
What is an advantage and a disadvantage of this repair system?
Explain the type of speciation (allopatric, parapatric, or sympatric
The raw material for evolution is random mutation. Discuss whether or
With regard to the timing of conjugation, explain why the recipient
A woman who is heterozygous, Bb, has brown eyes;
A recessive allele in mice results in an unusally long neck.
Why is an antibody used in this experiment? From
