Test your basic knowledge |

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






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






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






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






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






6. 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






7. Way more offspring are produced than by sexual reproduction






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






9. 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






10. Differences in appearances between the sexes






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






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






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






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






15. 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






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






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






18. A widely accepted idea with lots of evidence






19. Selects for the extremes and against the middle






20. 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






21. Mate choice; one sex chooses their mate






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






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






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


25. Related organisms have similar development plans






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






27. Directional selection - Disruptive selection - Stabalizing






28. 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






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






30. Humans selecting certain traits in domestic organisms






31. A subset of a population colonizes a new area






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






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






34. 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






35. Capable of asexual reproduction; most are not






36. Results in a genetically identical inidvidual






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






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






39. Change in alleles due to random chance






40. Sometimes different species share common ancestors






41. Form of reproduction more used because it creates Variation






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






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






44. Direct competition for mates with the same sex






45. The change in a populations genetics






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






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






48. Sexual partners chosen based on some characteristics






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






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