Cytogenetics is
A. the process by which the haploid cells are produced from a cell that was originally diploid.
B. a photographic representation of chromosome.
C. the field of genetics that involves the microscopic examination of the chromosomes and cell division.
D. the process in which the two nuclei are segregated into separate daughter cells.
E. the sorting process to divide one cell nucleus into two nuclei.
Answer: C
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The packaging of eukaryotic DNA into chromatin renders most promoters inaccessible to RNA polymerases and activator proteins. Under these conditions, most eukaryotic genes are:
A. constitutively repressed. B. constitutively activated C. globally expressed. D. insulated by nucleosome binding.
Do all animal samples have similar profiles?
a. Yes b. No
Mitochondria in algae are thought to have arisen from which source?
A. cyanobacteria B. anaerobic bacteria C. photosynthetic viruses D. aerobic bacteria E. Algae lack mitochondria.
Members of which of the following phyla would exhibit ostia and an osculum?
a) Cnidaria b) Cnetophora c) Nematoda d) Rotifera e) Porifera