Histone proteins are the principal agents in chromatin packaging. The nucleosome core particle is a heterooctameric protein complex that contains two molecules each of the four histones H2A, H2B, H3, and H4
Describe the process of managing existing nucleosome core particles during replication and the process of adding these and new nucleosome core particles to DNA after the replication fork passes.
The assembly of nucleosome core particles in connection with replication is driven by the partial denaturing of old (previously used) core particles into either dimers (H2A-H2B) or tetramers (H3-H4). These old core particle components are randomly joined with other dimers and tetramers after replication to form complete nucleosome core particles. New histone proteins are also available during replication that also form dimers and tetramers. A mixture of old and newly synthesized core particles is the pool from which post-replication core particles are assembled.
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A. budding of somatic vegetative cells. B. binary fission. C. hyphal fragmentation. D. All of the choices are correct.
The smallest cells in the domain Bacteria are:
A) viruses B) archaea C) mycoplasma D) cyanobacteria
Which taxonomic group has a high correlation between the number of genes and the size of the genome?
a. plants b. yeast c. prokaryotes d. invertebrate animals e. vertebrate animals
The tentative explanation to be tested is called
A. a hypothesis. B. a theory. C. a hunch. D. the conclusion. E. the data.