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






2. 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






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






4. Humans selecting certain traits in domestic organisms






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






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






7. Direct competition for mates with the same sex






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






9. Way more offspring are produced than by sexual reproduction






10. 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






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

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






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






14. Selects for the middle and against the extremes






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






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






17. A subset of a population colonizes a new area






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






19. One extreme is selected over the other






20. Change in alleles due to random chance






21. Sometimes different species share common ancestors






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






23. The change in a populations genetics






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






25. Mate choice; one sex chooses their mate






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






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






28. Sexual partners chosen based on some characteristics






29. 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






30. 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






31. 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






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






33. Directional selection - Disruptive selection - Stabalizing






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






35. 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






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. 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






39. The idea that characteristics can enhance an organisms survival






40. The organism with the most advantageous traits will survive






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






42. Results in a genetically identical inidvidual






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






44. Capable of asexual reproduction; most are not






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






46. 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






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






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






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






50. Differences in appearances between the sexes