The correct answer is: B) decreased chromatin condensation
Histone modifications which include phosphorylation, methylation, acetylation and their reverse processes are post-translational modifications that can regulate gene expression. Their effect depends on the amino acid (protein) that is modified, and the combination of the other modifications.
These modifications regulate gene expression by organizing the genome into active form-euchromatin, where DNA is accessible for transcription, or inactive-heterochromatin, where DNA is less accessible for transcription.
There are three sources of genetic variation: mutation, gene flow, and sexual reproduction. A mutation is simply a change in the DNA.
Ameoba has the similar mode of nutrition.
Phygocytosis can be
defined as the process where phagocytes or living cells engulf or ingest other
cells or particles. Thus, phagocytes can be of the body cells such as white blood
cell or free living sinlge cell organism such as ameoba. Ameoba uses the process
of phagocytosis to eat and acquire nutrients with the use of pseudopods to
engulf the particles.
