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






2. Selects for the middle and against the extremes






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






4. Directional selection - Disruptive selection - Stabalizing






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






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






7. 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






8. Results in a genetically identical inidvidual






9. A widely accepted idea with lots of evidence






10. Sexual partners chosen based on some characteristics






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






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






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






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






15. The change in a populations genetics






16. 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






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






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






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






20. Mate choice; one sex chooses their mate






21. 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






22. The idea that characteristics can enhance an organisms survival






23. 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






24. Humans selecting certain traits in domestic organisms






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






26. Differences in appearances between the sexes






27. 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






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






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. Capable of asexual reproduction; most are not






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






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






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






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






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






36. The organism with the most advantageous traits will survive






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






38. Way more offspring are produced than by sexual reproduction






39. Cells that can turn into other cells






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






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






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






43. Form of reproduction more used because it creates Variation






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






45. Direct competition for mates with the same sex






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






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






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


49. One extreme is selected over the other






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