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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. Sometimes different species share common ancestors






2. Related organisms have similar development plans






3. Humans selecting certain traits in domestic organisms






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






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






6. 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






7. 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






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






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






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






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






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






13. Way more offspring are produced than by sexual reproduction






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






15. Direct competition for mates with the same sex






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






17. 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






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






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






20. Change in alleles due to random chance






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






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






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






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






25. 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






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






27. 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






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






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

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30. Differences in appearances between the sexes






31. A widely accepted idea with lots of evidence






32. 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






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






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






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






36. One extreme is selected over the other






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






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






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






40. Cells that can turn into other cells






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






42. Selects for the extremes and against the middle






43. 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






44. The change in a populations genetics






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






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






47. Selects for the middle and against the extremes






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






49. Capable of asexual reproduction; most are not






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