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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 nucleic acid (DNA and RNA)






2. Gene

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






4. Genes contain instructions for assembling






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






6. The complete genetic material contained in an individual






7. The environmental factors that favour certain phenotypes






8. Different alleles for a gene






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






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






11. Deoxyribonucleic acid carries the genetic code for the proper functioning of an organism. It is composed of 5 carbon sugar (deoxyribose) four bases Adenine - Thymine - Cytosine and Guanine. the sugar is bonded to a phosphate group. This forms a long






12. The molecules responsible for bringing amino acids to the ribosome during protein synthesis are






13. Gradual evolution within a lineage






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






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






16. Human - like species that existed millions of years ago as witnessed through fossil evidence.






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






18. Any agent that can cause a change in DNA






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






20. The final product of transcription is...






21. Building block of a protein






22. Speciation preceded by a period of geographical isolation






23. Is a base found in DNA and RNA. This base pairs with Cytosine in DNA






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






25. Is found in DNA






26. A group of organisms whose members are sufficiently alike to be able to reproduce and produce fertile offspring and who are unable to reproduce with other such groups






27. Is a base found in DNA and RNA. Cytosine pairs with Guanine in DNA






28. During transcription an RNA molecule is formed






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






30. A process where the organisms that have traits that aid in its survival (adaptive traits) will reproduce to pass that trait to futher generations thus increasing the frequency of that trait in the population. Vice versa traits that reduce the chance






31. Ribosomal RNA; type of RNA that makes up part of the ribosome






32. 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.






33. A change in the base sequence of DNA; the ultimate source of new alleles






34. Determined the complete double helical structure of DNA






35. How often a form of a gene appears in a gene pool






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






37. 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






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






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






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






41. Two alternative forms of a gene e.g Tall vs Short






42. Shows how the embryos of different groups resemble each other at particular stages. Similarities indicate groups may share a common ancestor






43. 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






44. Mutation where an extra base is added






45. Innate trait; shared ancestry






46. What does DNA stand for...






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






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






49. shape of a DNA molecule formed when two twisted DNA strands are coiled into a springlike structure and held together by hydrogen bonds between the bases.






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