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  • Biology Factsheet: 265.Evidence for evolution: The pentadactly limb

    Biology Factsheet: 265.Evidence for evolution: The pentadactly limb

    Scientists use the concept of homology to identify evolutionary relationships among organisms. Homologies are characters shared between different species that were also present in their common ancesto...

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  • Biology Factsheet: 266. Bad clots: deep vein thrombosis

    Biology Factsheet: 266. Bad clots: deep vein thrombosis

    Deep vein thrombosis (DVT) is a blood clot that has formed in oneof the body’s deep veins e.g. in the calf or thigh muscle of the legs.This causes pain and swelling but if part of the clot break...

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  • Biology Factsheet: 267. How Science Works: Investigating probiotics

    Biology Factsheet: 267. How Science Works: Investigating probiotics

    This Factsheet:• Summarises the roles of the trillions of bacteria that live• Describes the potential benefits of probiotics• Reviews recent investigations into whether probiotic supple...

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  • Biology Factsheet: 268. The Biology of skin cancer

    Biology Factsheet: 268. The Biology of skin cancer

    This Factsheet:• Describes the causes and characteristics of malignant melanomas• Describes the most common type of exam questions on this topic• Outlines the most common errors and mis...

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  • Biology Factsheet: 269. Eradicating mosquitoes via GM

    Biology Factsheet: 269. Eradicating mosquitoes via GM

    This Factsheet:• Explains how scientists have created self-destructing and flightless GM mosquitoes• Discusses the possible wider ecological effects and ethical issues of GM mosquitoes...

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  • Biology Factsheet: 270. Rods and Cones

    Biology Factsheet: 270. Rods and Cones

    Fig.1 summarises the structure and function of the human eye....

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  • Biology Factsheet: 271. The myth of junk DNA

    Biology Factsheet: 271. The myth of junk DNA

    The Human Genome Project sequenced the 3 billion “letters” or bases (A,C,T,G) that make up the genome. Until recently, scientists believed that most of the genes in our bodies didn’t...

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  • Biology Factsheet: 272. Artificial hearts and heart transplants

    Biology Factsheet: 272. Artificial hearts and heart transplants

    A heart transplant involves removing a person’s diseased heartand replacing it with a healthy heart from a deceased donor. It is often the last resort to try to save a person’s life.This F...

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  • Biology Factsheet: 273. Ethical issues in Biology: Assisted fertility

    Biology Factsheet: 273. Ethical issues in Biology: Assisted fertility

    In Britain, approximately one in seven couples experience fertilitydifficulties. About two thirds of these are caused by problems withthe female and one third are caused by the male.This Factsheet:&bu...

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  • Biology Factsheet: 274. Lemming population cycles & climate change

    Biology Factsheet: 274. Lemming population cycles & climate change

    Lemmings are small mammals that live in the Arctic. Their main predators are stoats, which feed almostexclusively on lemmings but other predators include snowy owls, arctic foxes and long-tailed skuas...

    Price £3.00more info
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