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University Degree: Developmental & Reproductive Biology

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  1. Mitochondrial genetics. Are there really only maternally inherited mitochondria in our cells? What happens if paternal mitochondria happen to be present in the autosomal/germ cells? Is maternal mtDNA inheritance a universal mechanism that works for the en

    al 2005; Cables, 2002; Danan, 1999; Foley, 2003; Hayashida et al, 2005; Kunchithapadam, 1995); Whittle, Jonston, 2002). There are a small number of lineages that can be traced down to our common ancestor - the 'Mitochondrial Eve'. Our mtDNA is identical to that of our mothers and almost identical to the Mitochondrial Eve's mtDNA. As normal DNA, mtDNA mutates occasionally, switching one base (A, C, G or T) to another. So, mtDNA slowly diverges from that of Mitochondrial Eve at a rate proportional to the amount of time that has passed since the Mitochondrial Eve's existence.

    • Word count: 2233
  2. Contraceptives

    Generally, they consumed the seeds of herbs and other products made up of plants and herbs which served them as oral contraceptives. But these things were dangerous. Therefore to prevent this intrauterine device (IUD) was introduced. This was done by some ancient people who inserted small pieces of stone into the camels' uterus to prevent pregnancy. The intrauterine device (IUD) is a small device which is inserted into the women's uterus to prevent them from being pregnant. It is generally made up of plastic.

    • Word count: 2042
  3. Nutrition is the relationship of foods to the health of the human body.

    After assessing my diet throw the week and recording and analysing its nutrition value, relative to my gender, weight and age I had chance to learn, the food that I intake what are they consist of. I found my energy intake to be a lower than the recommended 1940 kcal per day. I consumed 1472.5 kcal. Food calories are nutrients and supply energy to the body. To increase this I should eat more fresh fruits and vegetables. Fats are essential nutrients.

    • Word count: 2494
  4. Life cycle

    This is strictly true only for organisms reproducing asexually. 2. Single-celled organisms, like protozoans, can reproduce asexually by dividing in two. Each daughter cell receives an identical copy of the parent's genes. 3. For multicellular organisms (and many single-celled organisms), the offspring are not genetically identical to the parents, but each is a unique combination of the traits of both parents. 4. Breeders of domestic plants and animals manipulate sexual reproduction by selecting offspring that exhibit certain desired traits.

    • Word count: 2261
  5. The Human Genome Project and its Ethical, Legal and Social Implications

    The goal of physical mapping is to produce a genome map consisting of approximately 30 000 markers separated by about 100 kilobases. Each marker will be a sequence-tagged site, a stretch of DNA with a unique and well-defined sequence. Sequencing, that is, the listing of the order of the approximately three billion base pairs that make up the human genome, is the final planned step of the project. Also key is the pursuit of advances in technology, including robotics, automation, and new methods of identifying and mapping genes, to allow large-scale sequencing.

    • Word count: 2110

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