• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Discuss how chromosomal DNA is organized in the nuclei of eukaryotic cells. What is the relevance of this for regulation of gene expression? How does DNA packaging/organization change during the cell cycle?

Extracts from this document...

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Genetics, Evolution & Biodiversity section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related AS and A Level Genetics, Evolution & Biodiversity essays

  1. Marked by a teacher

    An Investigation into the Mitotic Nuclear Division of Allium Sativum Root Tip Cells, and ...

    5 star(s)

    The potential of broken glass to cause detriment to the investigators. Any breakage of glass during the experiment can be highly dangerous to the investigators; especially the fragile, yet razor sharp microscope slides and coverslips. Any breakage of glassware should be reported to the relevant technician or member of staff.

  2. Recombinant DNA, genetically engineered DNA prepared in vitro by cutting up DNA molecules and ...

    interphase as well as during the relatively short period of cell division. Late in the interphase, DNA is synthesized and daughter chromosomes are created. First, DNA is made. Soon afterward, in a burst of activity, chromosomal DNA, RNA, and protein are fitted together, the chromosomes begin to take shape, and cell division begins.

  1. Chromosomes and DNA

    The DNA bases form the genetic code. Three bases form one bit of the code - a triplet code. Cells use the triplet code to make proteins in cell organelles called ribosomes. Some of the proteins work as enzymes controlling chemistry in the cell.

  2. Cell Theory - Discuss the theory that living organisms are composed of cells.

    SEPARATE PAPER 2.5 DNA Replication (1h) 2.5.1 State the DNA replication is semi-conservative. * Semi-conservative: half of each DNA helix is from original 2.5.2 Explain DNA replication in terms of unwinding of the double helix and separation of the strands by helicase, followed by formation of the new complementary strands by DNA polymerase.

  1. GENE EXPRESSION

    Place the tubes in ice. 4. Using a sterile loop, pick up a single colony of bacteria from your starter plate. Place the single colony into tube A and immerse the loop into the solution. Spin the loop between your index finger and thumb until the colony is dispersed into the solution (no floating chunks).

  2. Mechanisms for Controlling Eukarytotic Gene Expression.

    The polymerase in prokaryotes binds to a specific sequence of DNA just before the gene to allow for transcription, known as promoters. However due to the diversity of polymerases in eukaryotes there is a great diversity in the promoters. There are also in addition other proteins that bind further upstream which help regulate the expression known as enhancers.

  1. Gm foods and Gene therapy

    skills, and where constant pressures for promotion or recognition, the need to preserve funding, and just becoming immersed in research for its own sake, can leas to unthinking science. Nevertheless, of more concern, is the influence of commercial pressures from the biotechnology industry and from time to time from national

  2. Regulation of gene expression in prokaryotes and eukaryotes.

    Hence when lactose concentration is high, it induces the transcription of the operon. Once the substrate has all been metabolized, the repressor is able to bind to the operator once more, preventing unnecessary transcription of the genes. Catabolite repression In addition to the regulatory system described above, there is another mechanism for ensuring optimal substrate metabolism.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work