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Recombinant Dna Technology

Instructions:
  • Answer 50 questions in 15 minutes.
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  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Subset of natural selection that increases the likelihood of mating specifically






2. Selects for the extremes and against the middle






3. Direct competition for mates with the same sex






4. Traits that are neither advantageous nor disadvantageous; there is no selection






5. Cells that can become only a few different types of cells; mostly adult stem cells; found in bone marrow - the skin epidermis - etc; can sometimes be turned into Totipotent stem cells






6. The more common a trait becomes the more likely it will be selected against






7. Results in a tissue or an organ that is identical to the DNA donor






8. Takes the gene from a needed product - puts it into another organism (usually bacteria) and it will make duplicates of the product






9. Humans selecting certain traits in domestic organisms






10. The process of sperm sorting; separating the male sperm from the female sperm; difference told by swimming speed; boy sperm swim faster than girl sperm; Theory might have flaws in it though - only works 50% of the time






11. The change in a populations genetics






12. Recessive traits persistent to a certain population; recessive alleles hide from selection






13. A circular piece of DNA in bacteria where the gene is placed in Recom. DNA technology






14. Choosing the sperm/egg/embryo that will produce the desired child depending on DNA(genes)






15. Form of reproduction more used because it creates Variation






16. An accumulation of genetic charges over a certain amount of time






17. Capable of asexual reproduction; most are not






18. The movement of genes between two populations e.g. migration - immigration






19. Came up with the term Uniformitarianism(mechanisms for change in the past still occur today; believed at first there was no evolution






20. Sometimes different species share common ancestors






21. Forms that show how an organisms anatomy change over time






22. When a population becomes smaller and a few individuals survive the event






23. Selects for the middle and against the extremes






24. The organism with the most advantageous traits will survive






25. Change in the DNA sequence of an individual; the only true way to get a new allele; the source of all heritable variation






26. Believed that change was gradual;Gradualism(the mechanisms of the world - then - are the same today)






27. All species on earth are fixed; no changes - no new species - no extinction






28. Invented the binomial method(naming of species); also believed that life was fixed






29. Comparing an unknown sample of DNA to a known sample by using Gel Electrophoresis; used in crime scenes - paternity tests - and remains identification






30. Cells that can become any cell in the body; found in the embryo






31. Sexual partners chosen based on some characteristics






32. A process to help separate DNA fragments using an electrical current; helps to compare DNA samples by fragment pattern






33. 1.edits existing variation by using the material it has(variation that exists in population/ no new traits created by natural selection) 2. Has historical constraints(change in old structures) 3. Adaptations are compromises (good for one thing - bad






34. First to publish mechanisms for evolution; Had 2 idea: Use and disuse - use it more gets bigger; less it disappears - Inheritance of acquired characteristics - pass on changes to offspring






35. One extreme is selected over the other






36. Distribution of organisms related to evolution; different organisms play the same roles on different continents; island organisms resemble organisms on nearby mainland






37. Heterozygous chromosomes have an affect on an individuals genetics/alleles






38. Directional selection - Disruptive selection - Stabalizing






39. Scientific explanation of how life changes over time - science is based off of evidence - science is obtained with observation and testing - science is always open to question






40. Selection fro or against environment; leads to evolution only if variation has genetic components






41. Can make large quantities of product; infection free; less expensive than a natural source






42. A subset of a population colonizes a new area






43. Cuts DNA in specific sites; the fragments created are usually predictable






44. Set sail on the HMS Beagle to travel the islands and areas for signs of evolution; First book written in 1839 'voyage of the Beagle'; Second book published in 1859 'The Origin of Species by means of Natural Selection






45. The screening of embryos for genetic disorders; done in In Vitro fertilization(fertilization in a petri dish); PGD removes one cell from the embryo and screens it genetically; embryos with disorders are discarded - ones without are kept and implanted






46. Another method designed to sort female sperm form male sperm; goes by size of sperm; females are bigger than male sperm






47. Change in alleles due to random chance






48. A group of interbreeding organisms living in the same place at the same time






49. Cells that can turn into other cells






50. Differences in appearances between the sexes