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Recombinant Dna Technology

Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • 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 organism with the most advantageous traits will survive






2. Taking good genes to replace bad genes; almost never works; has unintended side effects; sometimes just doesn't work; protein becomes degraded - etc






3. Direct competition for mates with the same sex






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






5. Change in alleles due to random chance






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






7. Number of offspring in the next generation; your contribution to the gene pool






8. 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






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






10. 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






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






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






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






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






15. Humans selecting certain traits in domestic organisms






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






17. Capable of asexual reproduction; most are not






18. A subset of a population colonizes a new area






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






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






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






22. 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






23. Selects for the extremes and against the middle






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






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






26. Selects for the middle and against the extremes






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






28. In related organisms the underlying anatomy is similar even when the function is different






29. Differences in appearances between the sexes






30. 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






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






32. Results in a genetically identical inidvidual






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






34. 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






35. The change in a populations genetics






36. Closely related organisms have more similar DNA sequences and protein structures






37. One extreme is selected over the other






38. Directional selection - Disruptive selection - Stabalizing






39. Mate choice; one sex chooses their mate






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






41. 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






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






43. Cells that can turn into other cells






44. A widely accepted idea with lots of evidence






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






46. The idea that characteristics can enhance an organisms survival






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






48. Related organisms have similar development plans






49. 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






50. Sometimes different species share common ancestors