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






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






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






5. Sexual partners chosen based on some characteristics






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






7. 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






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






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






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






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






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






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






14. Direct competition for mates with the same sex






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






16. Cells that can turn into other cells






17. Selects for the extremes and against the middle






18. Way more offspring are produced than by sexual reproduction






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






20. Humans selecting certain traits in domestic organisms






21. Form of reproduction more used because it creates Variation






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






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






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






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






26. Mate choice; one sex chooses their mate






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






28. Sometimes different species share common ancestors






29. Directional selection - Disruptive selection - Stabalizing






30. A widely accepted idea with lots of evidence






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






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






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






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






35. One extreme is selected over the other






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






37. A subset of a population colonizes a new area






38. 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






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






40. Differences in appearances between the sexes






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






42. Related organisms have similar development plans






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






44. 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






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






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






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


48. 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






49. Selects for the middle and against the extremes






50. The idea that characteristics can enhance an organisms survival