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Web LinksUNIT 30AUNIT 30BUNIT 30C
UNIT 30D
Page 52 Web Activity: Creating a Personal Profile Some human genes determine visible traits that show an inheritance pattern that is similar to that of Mendel's garden peas. As a result, you can predict a person's genotype for these traits just by observing him or her. In this activity, you will use a list of some common dominant and recessive traits, and use this information to create a profile of your own phenotype and potential genotype. Follow this link to the activity. Page 54 Career Connection: Breeders Knowledge of genetics is used extensively in animal and plant breeding. Research career opportunities in these fields, and find out what education and training are required. National Occupation Classification Animal and plant breeders are included in this description of farmers and farm managers. Page 55 Career Connection: Genetic Counsellor Genetic counsellors are health professionals with specialized education, training, and experience in medical genetics and counselling. They may help families understand birth defects and how inheritance works. They may also counsel people at risk of developing genetic diseases themselves, or who may carry genes that increase their risk of developing diseases such as some forms of cancer. Careers in BiologyThis site from Emporia State University lists a large number of biology related careers. It provides a link for careers in genetic counselling. Page 56 Explore an Issue: Genetic Screening Understanding the Issue . Working in a group, conduct research and find out more about genetic screening. 1. Define genetic screening. Describe some technologies used in genetic screening. 2. What are some advantages of genetic screening? Provide an example. 3. What are some physical dangers associated with genetic screening methods? Provide an example. This Web page provides an overview of genetic screening tests and their uses, and is provided by the Nation Human Genome Research Institute. An introduction to different types of genetic screening from the Merck Online Medical Library Page 57 Web Activity: Following Harmful Genes One person in every 100 000 suffers from Wolfram Syndrome, an especially severe form of diabetes commonly associated with insulin dependence, premature blindness, deafness, and a reduced lifespan. Use pedigree analysis to explore the inheritance of this genetic disease. Links to come Page 57 Section 21.3 Questions 4. (a) How or where might genetic screening be used for purposes other than genetic counselling? (b) What laws, if any, do you think are likely to arise regarding the use of genetic screening? Why? Genetic Testing: Weighing the Risks and Benefits A discussion and collection of links on different types of genetic screening and the diseases for which genetic screening is available, from the Mayo Clinic. Page 58 Career Connection Geneticists and Genetics TestingUniversities, agricultural companies, and pharmaceutical companies are just some of the employers for geneticists and genetics technicians. Research the educational requirements and work conditions of these occupations. From this page, you can access a link to information on the occupation profile of genetics, provided by the Alberta Learning Information Service Links research needed. Page 68 Explore an Issue: Drought- and Salt-Tolerant Plants Geneticists' Concerns: Some geneticists worry about the consequences if GM crops hybridize with non-GM species. Traditional methods of crop breeding involve selecting particular individuals with desirable traits from within a population, thereby altering gene frequencies within a population of a single species. Newer technologies allow genes to be transferred between entirely different species. It is difficult to predict how these transferred genes will interact in a naturally reproducing population. For example, would a gene that increases drought tolerance also make a plant more susceptible to disease? . Evaluate each of the concerns expressed. (a) What assumptions lie at the basis of these divergent opinions? (b) What additional information would be useful to make an informed decision about whether or not GM crops should be pursued? . Working in a group, discuss the different viewpoints presented above with members of your group. . Conduct additional research on the issue of developing GM salt-olerant and drought-tolerant plants. When research is complete, come to a consensus view of the question below in your group. (c) Should GM crops, resistant to drought and salinity be funded? Do they provide at least a partial solution? . Be prepared to debate the issue as a class. Express your opinion and provide a rationale for your view. This article is from AgBios, a Canadian company involved in agricultural biotechnology: explore this site for other related information. This page is from the Network of Concerned Farmers in Australia , a group that discourages use of GM species in agriculture.
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