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To discover "Who's Your Daddy?" go explore how your gene http://www.kn.pacbell.com/wired/fil/pages/huntheredityka.html Answers to the Treasure Hunt: 1. Heredity traits are determined by specific genes that are passed down in families from parents to children. 2. The discover of the X and Y chromosome was discovered first. 3. These answers will be different for each student. On their answer sheet you will need to create a small tally chart. 4. Chromosomes area microscopic, threadlike part of the cell that carries hereditary information in the form of genes. They consist entirely of DNA. 5. The nucleus gives instructions to the cell through the DNA inside the chromosomes. 6. A mutation is a change of genes that affects our DNA. It affects the gene pool by insuring that new species evolve. 7. Individuals carry two genes for each trait; one from the mother's egg and one from the father's sperm. 8. Maurice Wilkins and Rosalind Franklin are credited with discovery of DNA. This occurred in the 1950's. However Francis H.C. Crick and James D. Watson created an actual model of the DNA molecule in 1952. 9. Humans are made up of 46 chromosomes or 23 pairs. They receive 23 chromosomes from their father and 23 chromosomes from their mother. There are 8,388,603 possible chromosome combinations from each parent. 10. Natural selection is Charles Darwin's "survival of the fittest" theory -- only the strong will survive. This is affected by mutations because mutations are how we evolve and nature favors mutations that make organisms stronger. |
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