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






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






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






4. Cells that can turn into other cells






5. One extreme is selected over the other






6. The idea that characteristics can enhance an organisms survival






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






8. A widely accepted idea with lots of evidence






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. Directional selection - Disruptive selection - Stabalizing






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






12. Sexual partners chosen based on some characteristics






13. Differences in appearances between the sexes






14. Results in a genetically identical inidvidual






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






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






17. 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






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






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






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






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






22. Humans selecting certain traits in domestic organisms






23. Related organisms have similar development plans






24. Change in alleles due to random chance






25. Way more offspring are produced than by sexual reproduction






26. 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






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


28. Selects for the middle and against the extremes






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






30. 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






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






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






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






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






35. Form of reproduction more used because it creates Variation






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






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






38. 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






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






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






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






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






43. Sometimes different species share common ancestors






44. 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






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






46. The change in a populations genetics






47. Capable of asexual reproduction; most are not






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






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






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