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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. 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






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






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






4. Selects for the extremes and against the middle






5. The idea that characteristics can enhance an organisms survival






6. Sexual partners chosen based on some characteristics






7. Capable of asexual reproduction; most are not






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






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






10. Directional selection - Disruptive selection - Stabalizing






11. 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






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






13. Way more offspring are produced than by sexual reproduction






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






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






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


17. Humans selecting certain traits in domestic organisms






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






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






20. A widely accepted idea with lots of evidence






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






22. One extreme is selected over the other






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. A subset of a population colonizes a new area






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






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






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






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






29. Selects for the middle and against the extremes






30. Form of reproduction more used because it creates Variation






31. 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






32. Direct competition for mates with the same sex






33. Cells that can turn into other cells






34. Results in a genetically identical inidvidual






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






36. Differences in appearances between the sexes






37. Sometimes different species share common ancestors






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






39. 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






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






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






42. Related organisms have similar development plans






43. 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






44. Mate choice; one sex chooses their mate






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






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






47. 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






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






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






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