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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. A taxon originating from and including a single common ancestor






2. The adaptive increase in pigmentation as a result of human - induced pollutants






3. The movement of individuals into an area






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






5. Genes contain instructions for assembling






6. A fossil known to have lived in a particular geologic age that can be used to date the rock layer in which it is found






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






8. T or F If a nucleic acid contain uracil it is DNA






9. A mutation in which one nucleotide is replaced by another nucleotide






10. Change of an organism over time. This can be caused by changes in in habitat or need to adapt for survival.






11. Speciation which does not involve a period of geographical separation






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






13. Innate trait; shared ancestry






14. Term used to refer to an organism that has two identical alleles for a particular trait. e.g TT is the homozygous genotype for Tall.






15. A DNA double helix is held together in the center by between nitrogenous bases






16. Evolution of the earth - which is hypothesized to have been formed over 4.6 billion years ago.






17. Selection for the ability to obtain a mate






18. Change in a DNA sequence that affects genetic information






19. A body cell






20. Evolution of living things - based on evidence from the past and present.






21. Populations that can interbreed with neighboring populations but not with populations separated by larger geographical distances






22. DNA is made of...






23. It is the time from when the Earth formed and simple life - forms evolved (and it is the longest era)






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






25. Layers of compressed sedimentary rock demonstrate the order or sequence at which events occurred. Cannot delineate the exact point of time - but is able to distinguish the order of events.






26. An organism that has characteristics resulting from chromosomal alteration. This is a result of crossing over of the chromosomes during Meiosis - mutations and random segregation.






27. The capacity of an individual of certain genotype to reproduce. It is usually equal to the proportion of the individual's genes in all the genes of the next generation






28. Change to a chromosome in which a fragment of the chromosome is removed






29. Gradual evolution within a lineage






30. T or F A cloned organism has the same proteins as another organism






31. Building block of a protein






32. 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.






33. Separates DNA by size






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






35. Trait evolves overtime; NO common ancestry






36. Cross where you cross unknown genotype with a recessive






37. A model for the evolution of different froms over a long period of time but with only slight chchanges occring between successive generations






38. Cell division in which the nucleus divides into nuclei containing the same number of chromosomes. Mitosis involves growth and repair and occurs in the body cells.






39. Used radioactive sulfur and radioactive phosphorus to determine that DNA is the genetic material - by demonstrating that it is DNA that is injected by bacteriophages into bacterial cells during infection






40. Change to a chromosome in which a fragment of one chromosome attaches to a nonhomologous chromosome






41. Ribosomes are made of...






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






43. Speciation preceded by a period of geographical isolation






44. Recognize and cut DNA at specific sequences usually palindromes






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






46. Separation of species or populations so that they cannot interbreed and produce fertile offspring






47. Organ no longer serves a function






48. The complete genetic material contained in an individual






49. Organisms with similar functions - but different underlying structure. Example: bird and insect wing. These structures do NOT show a common ancestral link.






50. A nucleotide of RNA is made of...






Can you answer 50 questions in 15 minutes?



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