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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. 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






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






3. Subset of natural selection that increases the likelihood of mating specifically






4. Came up with the term catastrophism(sudden events that lead to extinction - but not in todays time)






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






6. One extreme is selected over the other






7. Way more offspring are produced than by sexual reproduction






8. The change in a populations genetics






9. Related organisms have similar development plans






10. 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






11. 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






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






13. 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






14. A widely accepted idea with lots of evidence






15. Capable of asexual reproduction; most are not






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






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






18. Theory of a stable - nonevolving population in which frequency of alleles do not change; only occurs in large - isolated populations with random mating - and no natural selection or mutations






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






20. Pharmaceutical animals; cloned animals used ot produce products for humans

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






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






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






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






25. Selects for the extremes and against the middle






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






27. Results in a genetically identical inidvidual






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






29. Mate choice; one sex chooses their mate






30. Sexual partners chosen based on some characteristics






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






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






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






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






35. 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






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






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






38. Mutation - Natural selection - Genetic drift - Bottleneck effect - Founder effect - Gene flow - and Mate choice/non - random mating






39. Differences in appearances between the sexes






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






41. Form of reproduction more used because it creates Variation






42. Direct competition for mates with the same sex






43. Directional selection - Disruptive selection - Stabalizing






44. A subset of a population colonizes a new area






45. 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






46. Selects for the middle and against the extremes






47. 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






48. Sometimes different species share common ancestors






49. The organism with the most advantageous traits will survive






50. Change in alleles due to random chance