Crossing Over in Sordaria Background Sordaria fimicola is an ascomycete fungus that can be used to demonstrate the results of crossing over during meiosis. Sordaria is a haploid organism for most of its life cycle. It becomes diploid only when the fusion of the mycelia of two different strains results in the fusion of the two different types of haploid nuclei to form a diploid nucleus. The diploid nucleus must then undergo meiosis to resume its haploid state. Meiosis‚ followed by mitosis‚ in Sordaria
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Laser eye surgery has enabled millions of people to throw away their eyeglasses. Now several medical technology companies are hoping that lasers aimed at the feet will allow millions to take their socks off‚ even in public. The target is toenail fungus — an infection in an estimated 10 percent of American adults‚ or 23 million people — that causes toenails to become thick‚ yellow and fetid. If these lasers‚ which recently completed small clinical trials‚ work‚ they will represent a new way to
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Bananas The banana plant‚ or Musa acuminata‚ is one of the most important fruiting plants on Earth. This plant belongs to the Musaceae family‚ also known as the “banana family”. The genus Musa refers to “large herbaceous flowering plants” with fruit that is usually elongated and curved‚ with a yellow‚ purple‚ or red rind covering soft starchy fruit (Merriam-Webster). Banana plants are often mistaken for trees‚ because their “false stem” or pseudostem resembles a tree trunk. However‚ trees are dicots
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In 1876‚ the infamous Pueraria montana var. lobata (Kudzu) was introduced to the United States from Japan at the Centennial Exposition in Philadelphia‚ Pennsylvania. Member of the Fabaceae (pea) family‚ the Kudzu was believed to be the miracle plant of the south. Its purpose was to assist with decreasing soil erosion. The government paid farmers to plant this “miracle plant”. In the 1950’s it was recognized as a pest weed and was removed from the list of acceptable species. In 1998‚ the United States
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Senior Writing Seminar 13 December 2012 The Irish Potato Famine Six long years‚ with over 1 million dead‚ and nearly a quarter of the population missing‚ the Irish Potato Famine left a massive imprint in history (Irish 1). Most people underestimate the destruction of the Potato Famine because 1 million does not look like very many in today’s population numbers. Back in the 1800’s‚ less than 8 million populated Ireland. With
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growth of Corynespora cassiicola (Berk and Curt) of rubber (Hevea brasiliensis Muell. Arg.) using extracts of some plants. Afr. J. Biotechnol. 4(9): 996-1000. Osando JM‚ Waudo SW (1994). Interaction between Trichoderma species and Armillaria root rot fungus of tea in Kenya. Int. J. Pest 2572 Afr. J. Biotechnol. Manage. 40: 69-74. Pelczar MJ‚ Chan ECS (1972). Laboratory exercises in microbiology Mcgraw- Hill book company‚ pp. 197-347. Rao BS (1965). Maladies of Hevea in Malaysia. Rubber Research Institute
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That’s why this kind of species seems interested in a diet of paper or parchment. They includes moulds‚ mushrooms‚ and yeast which live on dead organic material and parasitic form on living plants and animals such as mildews and the athlete’s foot fungus‚ to mention only a few. In general‚ Fumigation is a method of pest control that completely fills an area with gaseous pesticides to suffocate or poison the pests within. It is utilized for control of pests in buildings‚ soil‚ grain‚ and produce
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The current opponents of marijuana legalization claim that marijuana does have addictive qualities and is an epidemic on America’s youth. This crowd presents that marijuana is a “silent-killer” due to a fungus and mold which can easily grow on the part which is smoked by users (PRNewswire). This fungus can cause lung cancer and they have deemed marijuana as bio-hazardous. The
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Wolkov et al.‚ (2014) cited Penicillium canescens is a filamentous fungus that typically does not secrete sufficient levels of cellulase activity. Cellobiohydrolase I (CBH) of P. canescens (PcCel7A) homologously cloned and then expressed into a host strain RN3-11-7 (niaD-). The recombinant enzyme showed maximum activity at pH 4.0–4.5. They found that PcCel7A was stable at 50 °C and pH 4.5 for 3 hours‚ while at 60°C after 30 min of incubation it lost 45% of activity. The recombinant enzyme showed
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bacterial vaginosis‚ the infection can also spread to the uterus and fallopian tubes‚ causing an infection called the pelvic inflammatory disease. Chronic yeast infection and ovulation Vaginal yeast infection is a common condition caused by the fungus Candida‚ a microorganism that naturally occurs in the vagina. Typically‚ Lactobacillus bacteria would keep it in check‚ preventing it from causing an
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