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Classify each of the characteristics below as pertaining to gene regulation in either prokaryotes or eukaryotes.

Genes are located on one chromosome.

Genes are located on different chromosomes.

Some genes are organized into operons, and mRNA transcripts often specify more than one protein.

Transcription and translation occur in the cytoplasm.

Transcription occurs in the nucleus, whereas translation occurs in the cytoplasm.

mRNA splicing must occur to remove introns.

Respuesta :

Gene regulation in prokaryotes: One chromosome contains all the genes. Operons are collections of genes, and many mRNA transcripts indicate many proteins. Transcription and translation occur in the cytoplasm.

Gene regulation in eukaryotes: Different chromosomes contain different genes. Introns must be cut out through mRNA splicing. Translation takes place in the cytoplasm, whereas transcription takes place in the nucleus.

What is gene regulation?

Only some of a cell's genes are translated and expressed (transcribed) by the cell. By activating or deactivating the expression of the proper genes, cells respond to environmental cues. Even though all cells in the body (with a few exceptions) have the same genome, cells in different tissues and organs develop, or become specialized, by producing diverse sets of proteins in multicellular animals. These alterations in gene expression, or differences in gene expression between cells, are often controlled at the transcriptional level.

Gene expression is regulated at three main levels:

  1. Transcriptional regulation,
  2. Translational management,
  3. Post-translational regulation.

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