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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. 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






2. Mate choice; one sex chooses their mate






3. Way more offspring are produced than by sexual reproduction






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






5. Related organisms have similar development plans






6. 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






7. 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






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






9. A widely accepted idea with lots of evidence






10. Selects for the extremes and against the middle






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






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






13. Direct competition for mates with the same sex






14. Humans selecting certain traits in domestic organisms






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






16. 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






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






18. Directional selection - Disruptive selection - Stabalizing






19. Differences in appearances between the sexes






20. Cells that can turn into other cells






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






22. A subset of a population colonizes a new area






23. One extreme is selected over the other






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






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






26. Form of reproduction more used because it creates Variation






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






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






29. 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






30. Change in alleles due to random chance






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






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






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






34. Selects for the middle and against the extremes






35. 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






36. Sexual partners chosen based on some characteristics






37. Capable of asexual reproduction; most are not






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






39. 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






40. The change in a populations genetics






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

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






43. The idea that characteristics can enhance an organisms survival






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






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






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






47. 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






48. Sometimes different species share common ancestors






49. Results in a genetically identical inidvidual






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







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


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