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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. Humans selecting certain traits in domestic organisms






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






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






4. 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






5. Selects for the extremes and against the middle






6. The organism with the most advantageous traits will survive






7. A widely accepted idea with lots of evidence






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






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






10. Selects for the middle and against the extremes






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






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

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13. Way more offspring are produced than by sexual reproduction






14. Results in a genetically identical inidvidual






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






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. Form of reproduction more used because it creates Variation






18. 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






19. 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






20. 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






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






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






23. 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






24. Direct competition for mates with the same sex






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






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






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






28. Change in alleles due to random chance






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






30. A subset of a population colonizes a new area






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






32. Differences in appearances between the sexes






33. One extreme is selected over the other






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






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






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






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






38. Related organisms have similar development plans






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






40. Mate choice; one sex chooses their mate






41. Capable of asexual reproduction; most are not






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






43. The idea that characteristics can enhance an organisms survival






44. 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






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






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






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






48. Directional selection - Disruptive selection - Stabalizing






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






50. Cells that can turn into other cells