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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. Sometimes different species share common ancestors






2. Way more offspring are produced than by sexual reproduction






3. Selects for the extremes and against the middle






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






5. Selects for the middle and against the extremes






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






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






8. Cells that can turn into other cells






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






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






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


12. 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






13. A widely accepted idea with lots of evidence






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






15. 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






16. Sexual partners chosen based on some characteristics






17. A subset of a population colonizes a new area






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






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






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






21. 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






22. The idea that characteristics can enhance an organisms survival






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






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






25. 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






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






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






28. Mate choice; one sex chooses their mate






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






30. Capable of asexual reproduction; most are not






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






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






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






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






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






37. 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






38. The organism with the most advantageous traits will survive






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






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






41. Results in a genetically identical inidvidual






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






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






44. Differences in appearances between the sexes






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






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






48. One extreme is selected over the other






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






50. 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