• 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)

    It is possible that the sharpness of the scalpel and mounted needle could be responsible for damage to those conducting the experiment, due to possible slippage or accidental movement when handling equipment. All the relevant cutting equipment should be handled with care and responsibility throughout the investigation.

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

    Oncogenes are derived from normal genes that belong to a class of genes known as proto-oncogenes. In their normal state, proto-oncogenes participate in important regulatory functions such as cellular signalling and activation of transcription. At some point during the life of a cell, however, these normal genes may become damaged and assume a dangerous role.

  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


    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. Regulation of gene expression in prokaryotes and eukaryotes.

    If glucose is present, bacteria will use this as a substrate of preference, and so the cell has a mechanism for switching off the lac operon, when glucose is available. This mechanism is called catabolite repression. Glucose inhibits adenyl cyclase, an enzyme that catalyzes ATP --> cAMP.

  2. Explain how DNA fingerprinting works.

    Explain the basis of genetic testing. Genetic testing is a sophisticated technique used to test for genetic disorders. Doctors can test patients for mutations that put them at high risk for hereditary forms of diseases such as breast and ovarian cancer.

  1. Chromosomes and DNA

    * The expected 50:50 ratio of males and females only shows up when large numbers of fertilisations are involved. The composition of DNA DNA stands for deoxyribonucleic acid. Chromosomes are made of DNA. DNA is a very large molecule (polymer)

  2. Mechanisms for Controlling Eukarytotic Gene Expression.

    ones used in the catabolism of lactose, is inactivate a gene repressor and let polymerase loose on the series of genes, linked end to end, known as an Operon. Then all the necessary mRNA strands are produced and translation can occur.

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