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






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






3. Humans selecting certain traits in domestic organisms






4. 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






5. Directional selection - Disruptive selection - Stabalizing






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






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






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






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






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






11. Capable of asexual reproduction; most are not






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






13. The organism with the most advantageous traits will survive






14. One extreme is selected over the other






15. Results in a genetically identical inidvidual






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






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






18. Mate choice; one sex chooses their mate






19. 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






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






21. Sexual partners chosen based on some characteristics






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






23. A widely accepted idea with lots of evidence






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






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. Differences in appearances between the sexes






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






28. Change in alleles due to random chance






29. Sometimes different species share common ancestors






30. Related organisms have similar development plans






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






32. The idea that characteristics can enhance an organisms survival






33. Direct competition for mates with the same sex






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






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






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






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






38. 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






39. 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






40. 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






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






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






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






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






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






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






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






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






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






50. A subset of a population colonizes a new area