Question

If a cell were unable to produce histone proteins, which of the following would be a likely effect? 45) A) There would be an increase in the amount of "satellite" DNA produced during centrifugation. B) Amplification of other genes would compensate for the lack of histones. C) The cell's DNA couldn't be packed into its nucleus. D) Pseudogenes would be transcribed to compensate for the decreased protein in the cell. E) Spindle fibers would not form during prophase.

Answer 1

Without histone proteins, a cell's DNA could not be effectively packed into the nucleus, which would interfere with chromatin formation and the regulation of gene expression.

Step-by-step explanation:

If a cell were unable to produce histone proteins, one likely effect would be that the cell's DNA couldn't be packed into its nucleus (Option C). Histones play a critical role in DNA packaging by forming the core around which DNA wraps to create nucleosomes. These nucleosomes further fold to form chromatin, which is essential for efficiently organizing the large amounts of DNA within the limited space of the nucleus. Without histones, this tight packaging is not possible, complicating numerous cellular processes including mitotic and meiotic chromosome condensation and gene expression regulation.

Answer 2

C) The cell's DNA couldn't be packed into its nucleus

Explanation: Histones are protein that arrange DNA into a structural unit that is called nucleosomes. They are located in the nucleus of eukaryotes, DNA wraps itself around histones for it to be packed.

If a cell could not produce histone the DNA wouldn't be packed because its main function is to keep the DNA closely packed in the nucleus.

Histones are also involved in gene regulation.