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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. Selects for the extremes and against the middle






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






3. 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






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






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






6. Way more offspring are produced than by sexual reproduction






7. Selects for the middle and against the extremes






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






9. 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






10. Mate choice; one sex chooses their mate






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






12. Direct competition for mates with the same sex






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






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






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






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






17. The change in a populations genetics






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






19. Humans selecting certain traits in domestic organisms






20. One extreme is selected over the other






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. Change in alleles due to random chance






23. Capable of asexual reproduction; most are not






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






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






26. 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






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






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






29. Sexual partners chosen based on some characteristics






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






31. Sometimes different species share common ancestors






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






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






34. Form of reproduction more used because it creates Variation






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






36. Directional selection - Disruptive selection - Stabalizing






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






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






39. 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






40. A subset of a population colonizes a new area






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






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


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






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






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






46. Differences in appearances between the sexes






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






48. 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






49. The idea that characteristics can enhance an organisms survival






50. Related organisms have similar development plans