• 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 colour of the flame is also of notable importance; the blue flame used in the investigation is of low visibility, and could prove dangerous to those who do not observe caution. Any hair of appropriate length should be tied back securely to prevent being set alight.

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

    breakage and rejoining of homologous chromatids occurs while the tetrads are intertwined during early meiosis. Geneticists began to investigate crossing over when they noted that the traits actually inherited did not always adhere to the principle of independent assortment. Testcrosses between AaBb and aabb parents--A, a, B, and b representing

  1. Chromosomes and DNA

    In this way, the DNA tells cells what to do. DNA replication A living cell can make a copy of its DNA. To do so it needs nucleotides, special carrier molecules, some energy and particular enzymes. This happens during cell divisions such as mitosis.

  2. Gm foods and Gene therapy

    wanting to heal the alleviate and sick human pain, who are now doing liposuction and facelifts. Enhancement is not limited to the surgeon's knife: in the US, thousands of small children who do not have growth hormone deficiency are being treated with human growth hormone, however there is not any proof that the treatment even works, in long term.

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

    * complementary base pairing = every replicated DNA strand will be identical to original * semi-conservative strands preserve original code 2.6 Transcription and Translation (2h) 2.6.1 Compare the structure of RNA and DNA. DNA RNA Sugar deoxyribose ribose Bases adenine, guanine, thymine, cytosine adenine, guanine, uracil, cytosine Strands double stranded

  2. 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).

  1. 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.

  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