QUESTIONS Q1 DISCUSS THE CHROMOSOMAL BASICS OF SEX DETERMINATION The chromosomal basis of sex varies with the organism. In most species‚ sex is determined by the presence or absence of special chromosomes. As a result of meiotic segregation‚ each gamete has one sex chromosome to contribute at fertilization. Sex determination is strictly chromosomal and is not usually influenced by the environment. There are two types of sex namely Heterogametic sex: The sex that produces two kinds of gametes
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Relations between the Spanish and the Indigenous peoples Spanish colonization started in 1492 when Cristoforo Colombo‚ Christopher Columbus‚ arrived in the West Indies .1 Even though Columbus was on route to find a easier‚ quicker route to India‚ he stumbled upon an unknown land full of exotic new people‚ plants‚ and animals. Columbus was the first Spanish American to come to America‚ but many more Spanish explorers would follow after him; including Cortes‚ Aguirre‚ and Pizarro. The Spanish seemed
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2012 Cloning an Instinct Species in “Jurassic Park” When we hear about cloning in the media‚ they are usually referring to reproductive cloning‚ human cloning in particular‚ and it’s scientific and ethical implications. In Jurassic Park‚ John Hammand‚ who is a rich entrepreneur‚ hires a group of scientists to clone dinosaurs from the Jurassic Period. The ethical dilemma presented in Jurassic Park is whether we should use our knowledge of cloning to revive an extinct species that ceased to exist through
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Gabreille Montez Mr. Shelley ENGL 102 28 September 2013 Technology taking over job opportunity In “Is Your Job an Endangered Species?” Andy Kessler effectively organizes his work by using different grouping skills. He introduces his idea by grabbing the attention of his audience; however‚ his informal tone isolates his audience. Kessler writes to persuade the reader on his belief that the advancement in technology is negatively impacting the job industry by replacing thousands
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The Endangered Species Act: Facing Extinction It is found that “ninety-nine percent of currently threatened species are at risk from human activities‚ primarily those driving habitat loss‚ introduction of exotic species‚ and global warming” (“The Extinction Crisis”). The Endangered Species Act was put into place in 1973 as citizens of the United States began to realize the harsh effects of their everyday living on the living species around them. Plants and animals began to disappear‚ causing discord
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important to make sure that no species die out so as to not upset the environmental balance. When we protect all species‚ we are protecting the entire habitat. Therefore‚ we are maintaining the safety of our own environment as humans. To help protect threatened species‚ then-president‚ Richard Nixon‚ signed into law the Endangered Species Act in 1973. Yet after 34 years‚ some still argue that this Act has been a failure. So the question is‚ "Did the Endangered Species Act have more negative effects
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Darwin and the Origin of Species Hawa Dia 11.14.14 Charles Darwin is well known for being an evolution scientist and is credited for discovering the Theory of Evolution through Natural Selection. Charles Robert Darwin was born in a town called Shrewsbury‚ Shropshire England on February 12‚ 1809. Darwin ’s most famous expedition was the HMS Beagle. Being on this voyage helped him to study natural selection from across the world and collect some data to bring back to England. In the beginning
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According to Raup (1991‚ p. 3f)‚ “except that the human species still living literally forever‚ it will some time stop to exist. The future of humanity is easy to explain about extinction such a long-term. An estimated 99.9% of all species that ever existed on Earth are already extinct.” There are two distinct ways in which the human species could become extinct: first‚ it is by evolving or transforming into one or more new species or life forms‚ amply particular from what came before so as not
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SPECIES DIVERSITY IN POOL AND RIFFLES OF A LOTIC TROPICAL SYSTEM Abstract This study looked at species adaptations to different substrate type‚ current velocity‚ dissolved oxygen and depth that allows for the specialized utilization of the microhabitats found and how this was responsible for similarities and differences in species diversity in pools and riffles. The riffle was seen as the more diverse mesohabitat. Of the 47 species found‚ the riffle had 37 of these organisms present. The
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Prompt- Describe and analyse at least one explanation for the on-going over representation of Indigenous Australians in the penal system This essay explores the issues of representation and incarceration in relation to the Indigenous community. The status of Aboriginal people is indicative of a marginalised group‚ essentially denying them of equal treatment and rights. In a criminological sense‚ Indigenous people are more likely to be arrested and charged with more serious criminal offences (Blagg
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