• 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)

    A glass bin, of prominent colour (usually red) should be present and suitably marked. Any such breakages should be cleaned up immediately, and other people surrounding the breakage should be informed. The possibility of damage to the human body caused by the experimental cutting equipment used in the investigation.

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

    In humans, a woman carries two X chromosomes and 44 autosomes in each body cell and one X chromosome and 22 autosomes in each egg. A man carries one X and one Y chromosome and 44 autosomes in each body cell and either an X or a Y chromosome and 22 autosomes in each sperm cell.

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

    Aerobic cellular respiration: Pyruvate --> broken down (in mitchocondrion) --> CO2 +H2O--> large yield of ATP 2.8 Photosynthesis (3h) 2.8.1 State that photosynthesis involves conversion of light energy into chemical energy 6CO2 + 6H2O + sunlight (light energy) --> C6H12O6 (chemical energy)


    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.

    Children and adults have varying degrees of mental retardation or learning disabilities, behavioral and emotional problems including slurred or broken speech, inability to control anger and other emotions and sensitivity to loud noises. People affected with fragile X do not look much different from their peers.

  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