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CSET Genetics And Evolution

Subjects : cset, science, genetics
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. Building block of a protein






2. Era of recent life that began about 66 million years ago and continues today; includes the first appearance Hominids






3. To create a recombinant DNA molecule - one would have to first cut two DNAs with creating before pasting them together






4. The banding pattern of a persons DNA after being cut and run on gel is called






5. Science dealing with DNA and protein synthesis of living organisms. Manipulation of DNA.






6. Determined the concept of complementary base pairing






7. Form of reproductive isolation in which structural differences in the anatomy of reproductive organs prevent sperm transfer between individuals of different species






8. A group of organisms of the same species occupying a given area.






9. The evolutionary history/geneology of a group of organisms (a tree thingy)






10. When competition causes two closely related species to become more different in regions where their ranges overlap






11. Similar DNA sequences or protein structures (such as hemoglobin) may link different species to a similar ancestor.






12. Evolutionary process in which a species or related species folllow different evolutionary paths to eventually become less related






13. Is the genetic makeup of an organism (TT or Tt) ; All the combinations of genes you have for a certain trait.






14. Closely related species occupying different habitats - niches preventing them from interbreeding






15. Earth's history organized into four eras: Precambrian - Paleozoic - Mesozoic - and Cenozoic






16. Which structure contains anticodons






17. Speciation preceded by a period of geographical isolation






18. All the factors in an organism's surroundings that can potentially affect it






19. Condition in which an organism has extra sets of chromosomes






20. The evolutionary process by which a species becomes better suited to its niche.






21. The formation of new species as a result of evolution






22. Embryos of similar organisms have very similar early development indicating similar DNA at work






23. Any preserved remains of an organism from the past. Usually found in sedimentary rock.






24. Breeding organisms with specific traits in order to produce offspring with identical traits






25. An episode of large - scale extinction affecting many different groups of organisms within a short period of time






26. In the event of a sperm fertilizing an egg of another species - mechanisms that prevent result being fruitful






27. Heteros have a phenotype tintertmediate b/t phenotypes of the 2 homoz






28. Selection acting against the extremes of a range of variation - resulting in resistance to change in allele frequencies






29. Geologic period that followed the Precambrian;means 'ancient life' - early life (570-286 million years ago); single cell organisms - shells - mollusks - rise of first vertebrates - rise of land plants - amphibians - insects - seed plants - and trees






30. How many codons are needed to specify three amino acids






31. One of the identical rods of a chromosome.






32. These prevent fertilization between species e.g. diff breeding season - mating behaviour






33. Describes the isolation of a physical barrier e.g. body of water (ocean) or mountains






34. Periods of rapid evolution punctuated by periods of little change






35. Is any chromosome that is not a sex chromosome.






36. Trait evolves overtime; NO common ancestry






37. A type of barrier between species; the species remain isolated because male and femal gametes of the different species cannot fuse - or they die before they unite.






38. The offspring of a cross between two inbred lines within a single species. May also refer to the offspring of across between two species






39. Copying the code from DNA onto mRNA






40. Method of replication that implies that each new strand of DNA is half original and half new






41. 2 alleles for a character separate during the formation of gametes - so that each gamete only carriers one allele for each character


42. Chromosomes that determine the sex of an individual. These are X for female and Y for male. The female egg is an X while the male sperm can be X or Y






43. The region of the chromosome that holds the two sister chromatids together during mitosis






44. Uses metamorphic or igneous rock - calculates the age of an object by assessing the amount of radioactive element still present in the organism. Radioactive elements are slowly lost over time because of decay.






45. Even if the gametes of the two species meet - fertilization does not occur






46. A limb with five digits (fingers)






47. When a few individuals become isolated from a larger population - this smaller group may establish a new population whose gene pool is different from their source population.






48. Chromosomes are collections of many






49. Another name for a gene






50. Process by which individuals that are better suited to their environment survive and reproduce most successfully; also called survival of the fittest