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






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






3. The individuals choice of which mate they will choose. The choice is dependant on what traits the individual finds attractive. e.g some people will want their mates to be smart or pretty.






4. Movement of alleles into or out of a population due to the migration of individuals to or from the population






5. Three dimensional shape of organism made from a mold. May be created with plaster or over time with minerals.






6. Cell division that produces reproductive cells or gamates.This occurs in the gonads (testicle and ovaries in animals) Here the chromosome number is halved the original amount. (each new cell has a haploid number = n) All daughter cells are not geneti






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






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






9. Change in allele frequencies as a result of the migration of a small subgroup of a population






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






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






12. Form of reproductive isolation in which structural differences in the anatomy of reproductive organs prevent sperm transfer between individuals of different species






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






14. Trait evolves overtime; NO common ancestry






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






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






17. 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






18. A pairing where the parent plants differ in only one character.






19. 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.






20. Is any chromosome that is not a sex chromosome.






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






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






23. Change to a chromosome in which part of the chromosome is repeated






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






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






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






27. 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.






28. DNA that is coiled around proteins






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






30. 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






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






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






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






34. Consists of all genes - including all the different alleles - that are present in a population






35. A change or error in the DNA sequence






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






37. During transcription an RNA molecule is formed






38. Types of rocks formed after exposure to very high heat. Because of the high temperatures - fossils are not able to be recovered from these types of rocks. Absolute or radioactive dating is possible - however.






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






40. Synonym for protein; chain of amino acids






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






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






43. Genes contain instructions for assembling






44. The environmental factors that favour certain phenotypes






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






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






47. Organ no longer serves a function






48. A limb with five digits (fingers)






49. Trait where heterozygous is a blending of two alleles






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