Fruit Fly Lab Alycia Fletcher Biology IB HL March 25th 2010 Fruit Fly Lab Introduction Genes can either be sex-linked or autosomal. If a gene appears mostly in one sex chances are the gene is sex-linked and if it appears frequently in both sexes it is most likely autosomal. Using Drosophila melanogaster‚ also known as the fruit fly‚ we will determine whether the gene is sex-linked or autosomal. Drosophila melanogasters have a relatively short life span and are an excellent organism
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BEES DISAPERANCE Nathan Thiry South College Many people are unaware of the importance of the honey bee. When most people think of a bee‚ we think of a bee sting or flowers. This is not all the honey bee is about. They play a major roll in our environment. In New England‚ farmers of cranberries and blueberries are extremely concerned because the bees are disappearing and no one seems to have an explanation. They make over 100 million dollars a year with the help of the honey bee. They
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INTRODUCTION INTO SEEDS AND FLOWERS REVIEW+MORE The cycle of life for a plant starts off as a seed. The seed goes through mitosis and turns into a nature plant‚ which sometimes may produce flowers and fruits. Fruits are where the new seeds can be found‚ continuing the life cycle. A monocot seed with 2 genetic codes (2N) would grow by mitosis. The growth by mitosis would lead to the growth of the apical tips. The meristem cells (stem cells) keep dividing. Then the zone of elongation‚
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Quality seedlings are essential for good growth and performance of vegetable crops. Hence‚ the practice of seedling production is emerging as a profession and commercial activity. During the past‚ as most of the vegetable varieties were open pollinated‚ farmers produced the seedlings at a relatively low cost by preparing their own nursery beds. However‚ due to increase in demand for seeds of hybrid varieties which cost much more than the open pollinated varieties‚ many progressive farmers and agriculture
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Insects are often seen merely as pests or uninvited guests to humanactivities. A large number of insects coexist with us humans and are either harmless or beneficial to our society and its endeavors. Often what is needed is a proper balance between our society and the societies that insect speciesrepresent. The emergence in the mid-20th century of integrated pest management is one aspect of our efforts to live together more successfully. The changes humans have brought upon their ecosystems by monocultures
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In biology species can become isolated from other species through a number of processes. These isolation processes keep the two species from interbreeding and producing hybrid offspring. There are five separate isolation processes that prevent two species capable of producing offspring from being able to do so. Ecological Isolation Ecological‚ or habitat‚ isolation is when two species that could interbreed do not because the species live in different areas. For example‚ in the wild of India both
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A Man Created a Homemade Beehive in Order to Save the Bees…His Invention Has Spread All Over the World Nowadays‚ bees are extremely popular in the media because their population is declining‚ as well as the number of the food that they produce. According to reports‚ the number of beehives is declining rapidly and the reasons for this are the climate changes and the use of mites and pesticides. As people are becoming more and more aware of the seriousness of this problem‚ they are trying as best
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Natural selection is the driving force in evolution because it is what trait offspring. There are many cases of evidence showing this such as the peppered moth population‚ the blue mussels‚ and the finches that we studied. The peppered is a very good example of natural selection because there is already black moths in the population‚ but the peppered survived better before the industrial revolution.Though when the industrial revolution comes in the lichens on the trees die and the peppered moth
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The remains of ancient plants can provide a wealth of archaeological information about a site‚ with many methods being available to the archaeologist engaged in extracting this data. Perhaps one of the most widely-known of these techniques‚ possibly because of its attractive nature‚ is pollen analysis - a technique developed in the early years of the twentieth century by‚ like so many archaeological techniques‚ a geologist -- the Norwegian Lennart van Post. To understand the technique and the uses
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Albert Einstein was believed to say‚ “If the bee disappears from the surface of the globe‚ man would have no more than four years to live.” Now that Colony Collapse Disorder is occurring‚ it is possible that bees will disappear. Colony Collapse Disorder (CCD) is when bees disappear from their hives or suddenly die. No one knows the cause of Colony Collapse Disorder. Some think it is caused by pesticides‚ but Bryan Walsh wrote that the cause is the Varroa mite. It could be that CCD is caused by a
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