Genetics Practice Problems‚ book #1 1. In peas‚ the gene for tallness is dominant to the gene for shortness. What offspring phenotypes and genotypes would be expected from the following crosses‚ and in what proportions? a. Heterozygous x heterozygous b. Heterozygous x homozygous tall c. Homozygous tall x homozygous short 2. If blue eye color in man is recessive to all other colors‚ could: i. Brown eyed parents have a blue eyed child
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Sex linked genetic disorders Fragile x syndrome Sex-linked traits are genetic characteristics determined by genes located on sex chromosomes. Genes are pieces of DNA on chromosomes that carry information that are responsible for inheriting traits. Different forms of the same gene are called alleles. One allele for a certain trait is inherited from a mother and one from a father. These traits are passed down from parent to their offspring by sexual reproduction. Fragile X syndrome (FXS) or Martin-Bell
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Genetic Modification Genetic modification is the same as genetic engineering and genetic manipulation‚ which is the use of modern technology to change or alter the genetic code of an organism. Genetic modification includes using genes from one organism and inserting them into another‚ however‚ genetic modification can also be altering the original gene of the organism without changing the genetic codes. Therefore a (GMO) Genetically Modified Organism is one whose genes were altered. Genetic modification
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Chimerism (Dual Genetics) In Humans Cheryl Banta Biology 160/ Ms. Galbreath Tacoma Community College 11/30/13 Abstract You are the doctor of a 52-year- old woman‚ who comes to see you‚ very upset. Blood tests have revealed startling information about two of her three adult sons. Even though they were conceived naturally with her husband‚ who is definitely their father‚ the tests state that she is not their biological mother. How could she have given birth to someone
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Description of how genetic variation and genetic drift affects extinction of various species. http://highered.mheducation.com/sites/9834092339/student_view0/chapter20/simulation_of_genetic_drift.html http://anthro.palomar.edu/synthetic/synth_5.htm Genetic drift has many factors that can be linked to the extinction of a species. Genetic drift is a change in allele frequency which can rise or fall over time. Genetic drift lowers genetic variation every generation. The strength genetic drift depends on
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Gattaca Essay Through his film Gattaca‚ Andrew Niccol shows that the ‘not-so-distant future’ of genetic engineering is not as superior as it seems. A time where children are engineered from conception is imminent. An obvious benefit of such a world is the ability to eliminate all genetic flaws from diseases to deformities. While this may seem like a utopian society Niccol suggests that the more technologically advanced man becomes‚ the more human spirit is lost. He also implies that man can never
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How did the Drosophilia melanogaster impact Genetics? Thomas Hunt Morgan used Drosophila melanogaster for studying heredity. Morgan used the Drosophila melanogaster‚ known as the fruit fly‚ because it feeds on decaying fruit. It is small‚ about 3 mm long‚ and easy to raise in the laboratory; a thousand can be collected in a one-quart glass milk bottle. Moreover‚ it is fertile all year long and very prolific‚ producing a new generation every twelve days‚ or thirty generations per year. Not only
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has an amazing genetic profile. A week before the big launch‚ The Mission Director is Murdered and an
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detection of the genetically connected diseases is to find out through a genetic test whether you carry the gene that is associated with whatever disease
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Cindy is an expectant mother who is eight weeks pregnant with her first child. She is having a genetic test because there is a history of learning disabilities and mental impairment in her family. Based on her family history‚ there is a possibility that she is a carrier for Fragile X‚ a genetic disorder that occurs when a person’s X chromosome(s) contains greater than 200 repeats of the CGG base pair sequence. Symptoms in infants include a delay in crawling‚ walking‚ or twisting‚ frequent hand clapping
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