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. 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






2. Selects for the extremes and against the middle






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






4. A subset of a population colonizes a new area






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






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






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






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. Differences in appearances between the sexes






10. A widely accepted idea with lots of evidence






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






12. 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






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






14. 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






15. Change in alleles due to random chance






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






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






18. Cells that can turn into other cells






19. The change in a populations genetics






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






21. The organism with the most advantageous traits will survive






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






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






24. The idea that characteristics can enhance an organisms survival






25. 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






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






27. Selects for the middle and against the extremes






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






29. 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






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






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






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






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






34. Way more offspring are produced than by sexual reproduction






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






36. Humans selecting certain traits in domestic organisms






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






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






39. Mate choice; one sex chooses their mate






40. Sometimes different species share common ancestors






41. Capable of asexual reproduction; most are not






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






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






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






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






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






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






48. 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






49. Related organisms have similar development plans






50. Direct competition for mates with the same sex