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






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






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






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






5. Change in alleles due to random chance






6. The change in a populations genetics






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






8. 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






9. 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






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






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






12. 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






13. Form of reproduction more used because it creates Variation






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






15. Selects for the extremes and against the middle






16. Selects for the middle and against the extremes






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






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






19. 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






20. Cells that can turn into other cells






21. Humans selecting certain traits in domestic organisms






22. 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






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






24. Sexual partners chosen based on some characteristics






25. Capable of asexual reproduction; most are not






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






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






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






29. Direct competition for mates with the same sex






30. Results in a genetically identical inidvidual






31. Way more offspring are produced than by sexual reproduction






32. Sometimes different species share common ancestors






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






34. Mate choice; one sex chooses their mate






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






36. A widely accepted idea with lots of evidence






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






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






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






40. The organism with the most advantageous traits will survive






41. A subset of a population colonizes a new area






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






43. Differences in appearances between the sexes






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






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






46. 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






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

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






49. One extreme is selected over the other






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