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Recombinant Dna Technology

Instructions:
  • Answer 50 questions in 15 minutes.
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  • 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. 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






3. Selects for the extremes and against the middle






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






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






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






7. One extreme is selected over the other






8. Related organisms have similar development plans






9. Change in alleles due to random chance






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






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






12. Mate choice; one sex chooses their mate






13. Cells that can turn into other cells






14. Sexual partners chosen based on some characteristics






15. The organism with the most advantageous traits will survive






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






17. Way more offspring are produced than by sexual reproduction






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






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

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






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






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






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






24. Form of reproduction more used because it creates Variation






25. The change in a populations genetics






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






27. Differences in appearances between the sexes






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






29. 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






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






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






32. 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






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






34. Directional selection - Disruptive selection - Stabalizing






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






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






37. 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






38. A subset of a population colonizes a new area






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






40. Direct competition for mates with the same sex






41. 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






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






43. A widely accepted idea with lots of evidence






44. Selects for the middle and against the extremes






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






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






47. The idea that characteristics can enhance an organisms survival






48. Sometimes different species share common ancestors






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






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