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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. Natural selection that causes the frequency of a particular allele to move in one direction






3. Is a base found in DNA and RNA. In DNA its partner is Thymine. In RNA its partner is Uracil






4. Pea plants






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






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






7. A change in the base sequence of a gene






8. A process that results in an allele having a different probability of remaining in the gene pool compared with that of another allele






9. One of the identical rods of a chromosome.






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






11. Impression made from a organism in soft material such as sand or mud.






12. The type of environment in which an organism or group normally lives or occurs






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






14. A population partially isolated from other populations of the same species






15. Is the evolutionary process whereby a population becomes better suited to its habitat






16. 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.






17. The complete genetic material contained in an individual






18. Building block of a nucleic acid (DNA and RNA)






19. Group of individuals of the same species that live in the same area






20. Physical characteristics of an organism based on its genotype. e.g. Plant that has a genotype of TT will have a phenotype of Tall.






21. When F1 is fully fertile but F2 has low fertility (rice - cotton)






22. Structure present in an organism however does NOT have a known function. May link organisms with similar vestigial structures. Example: appendix - coccyx bone - whale leg bones.






23. The sum total of an organism's requirements; its way of life






24. An evolutionary 'branch' and its daughter 'twigs'






25. Predicts the possible outcome of a genetic cross.






26. The final product of transcription is...






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






28. Any indirect evidence of life preserved as an impression in rock; trails - footprints - tracks - burrows - and bite marks






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






30. Chromosomes are collections of many






31. Are noncoding sequences in the gene that are removed from RNA after transcription






32. Innate trait; shared ancestry






33. During transcription an RNA molecule is formed






34. A body cell






35. A small simple structure (as a fertilized egg) from which new tissue can develop into a complete organism. It is also a cell






36. Gene

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37. An ancestor that two or more descendants have in common






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






39. The gradual changes in gene frequencies in a population due to random events






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






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






42. Process by which a ribosome uses the code on mRNA to make proteins






43. Is a trait that is more expressed than another trait. Is written in capital letters for Genotype. E.g Tall genotype is TT or Tt where T is the allele for tall trait and t is the trait for small. T will be expressed more.






44. Selection against one end of a range of variation - resulting in a progressive change in allele frequency






45. Any agent that can cause a change in DNA






46. Natural disaster eliminates most of the population - members left contribute the alleles for the new population.






47. An equilibrium in the occurence of two or more different froms within the same population usually caused by different allele combiinations of a gene






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






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






50. Mating of an individual of unknown genotype but dominant phenotype w/ a homozygous recessive individual