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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. Way more offspring are produced than by sexual reproduction






2. Change in alleles due to random chance






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






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






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






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






7. 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






8. Sometimes different species share common ancestors






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






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






11. 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






12. Differences in appearances between the sexes






13. Selects for the middle and against the extremes






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






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






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






17. A group of interbreeding organisms living in the same place at the same time






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






19. Cells that can turn into other cells






20. The idea that characteristics can enhance an organisms survival






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






22. 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






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






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






25. A widely accepted idea with lots of evidence






26. Direct competition for mates with the same sex






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






28. Mate choice; one sex chooses their mate






29. 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






30. Humans selecting certain traits in domestic organisms






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






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






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






34. The change in a populations genetics






35. Sexual partners chosen based on some characteristics






36. 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






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






38. Form of reproduction more used because it creates Variation






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






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






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






42. A subset of a population colonizes a new area






43. 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






44. Results in a genetically identical inidvidual






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






46. Directional selection - Disruptive selection - Stabalizing






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






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






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






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