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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. Large - scale evolutionary changes that take place over long periods of time






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






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






4. One of the types of fossils made from hardened tree resin. Preserves both hard and soft parts.






5. The inherited characteristic often masked by the dominant characteristic and not seen in an organism. e.g. Tt plant will still be tall. Where T is the dominant trait for tall and t is the recessive trait for small.






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






7. The comparison of the structures of different organisms






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






9. What is one benefit for having two strands of DNA?






10. Features of different species tat are similar in function but not necessarily in structure and in which the similarity is not the result of common ancestry






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






12. 2 alleles for a character separate during the formation of gametes - so that each gamete only carriers one allele for each character

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






14. The structure on a tRNA molecule that allows it interact with an mRNA molecule






15. The preserved remains or traces of an organism that lived in the past






16. The final product of transcription is...






17. The study of the structures of different organisms - looking at homologous parts






18. A distinct population of a species that varies from other populations of the same species.






19. A DNA strand that has the bases CTAATGT forms a complete complementary double helix with






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






21. Organisms with a similar underlying structure - but different function. Example: bird - bat and dolphin 'arm'. Shows a common ancestral link.






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






23. The study of the past and present distribution of species.






24. Separates DNA by size






25. Process by which an organism is slowly turned to stone as the body is replaced by minerals.






26. Proteins are made of...






27. One of the identical rods of a chromosome.






28. The number of times an allele appears in a population






29. Inherited feature that tends to prevent species from interbreeding with other species






30. Group of similar organisms that can breed and produce fertile offspring






31. Disappearance of a species from all parts of its geographical range






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






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






34. DNA that is coiled around proteins






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






36. The enzyme that binds to the promoter region of a gene during transcription is called...






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






38. Which structure contains anticodons






39. Determined the concept of complementary base pairing






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






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






42. 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.






43. The reduction of a population - typically by a natural disaster - such that the surviving population is no longer genetically representative of the original population.






44. The independant evolution of similar traits - starting from a similar ancestral condition






45. Trait evolves overtime; NO common ancestry






46. Innate trait; shared ancestry






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






48. 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.






49. You mate the unknown genotype with an organism showing the recessive trait. If any of the offspring show the recessive trait - the original unknown parent was heterozygous. If no recessive trats show up - the original parent was homozygous.






50. A change or error in the DNA sequence