Test your basic knowledge |

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. 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.






2. Gene

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


3. Building block of a protein






4. Features that are superficially similar but have different modes of development






5. Organism is preserved at very low temperatures. Preservation of both hard and soft parts can occur.






6. A base found in DNA (but not in RNA). This base pairs with Adenine.






7. DNA is made of...






8. Used x ray cyrstallography to create an image of DNA






9. Independent segregation of genes during the formation of gametes






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






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






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






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






14. A limb with five digits (fingers)






15. When chromosome is changed by radiation and chemicals - results a permanent structural change in the chromosome - which will no longer be able to pair with its homologous pair. Eg - deletion - duplication - inversion and translocation.






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






17. Process by which one species gives rise to two or more species






18. The condition in which there is no change in allele frequencies from generation to generation (i.e. no evolution)






19. A codon is made of...






20. Structures in different but related species that are derived from the same ancestral structure but now serve different purposes.






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






22. 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






23. 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.






24. A copy of a gene is made during a process called this






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






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






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






28. A combining of genes or characters different from what they were in the parents






29. The complete genetic material contained in an individual






30. Mating of 2 oism that differ in 2 characters






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






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






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






34. Determined the complete double helical structure of DNA






35. Speciation preceded by a period of geographical isolation






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






37. Another term for pure breeding






38. A genetic crosses that involve one trait. e.g TT plant crossed with tt plant has offspring who are heterozygous Tt.






39. How often a particular gene occurs in the population






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






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






42. 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






43. Evolution resulting from small specific genetic changes that can lead to a new subspecies






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






45. Selection acting against the middle of a range of variation






46. Another name for a gene






47. A type of natural selection in which genetic diversity decreases as the population stabilises on a particular trait value






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






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






50. Trait evolves overtime; NO common ancestry