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






3. Pea plants






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






5. Reciprocal evolution in two species as a result of the selection pressure each imposes upon the other






6. Mating of 2 oism that differ in 2 characters






7. The comparison of the structures of different organisms






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






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






10. Movement of organisms ro of from a population






11. Evolution of the earth - which is hypothesized to have been formed over 4.6 billion years ago.






12. Method of replication that implies that each new strand of DNA is half original and half new






13. Transcrition occurs in the...






14. Innate trait; shared ancestry






15. How often a particular gene occurs in the population






16. Translation occurs in the...






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






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






19. Name for oism with one dominant and one recessive allele






20. Which type of Rna functions as a blue print of the genetic code






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






22. A codon is made of...






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






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






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






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






27. Gene

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28. The offspring of a cross between two inbred lines within a single species. May also refer to the offspring of across between two species






29. The complete genetic material contained in an individual






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






31. Which structure contains anticodons






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






33. An episode of large - scale extinction affecting many different groups of organisms within a short period of time






34. The region of the chromosome that holds the two sister chromatids together during mitosis






35. Type of sympatric speciation that occurs when a new species is formed because of a change in microhabitats






36. Independent segregation of genes during the formation of gametes






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






38. 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.






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






40. When a few individuals become isolated from a larger population - this smaller group may establish a new population whose gene pool is different from their source population.






41. A mutation in which one nucleotide is replaced by another nucleotide






42. An organism that has characteristics resulting from chromosomal alteration. This is a result of crossing over of the chromosomes during Meiosis - mutations and random segregation.






43. 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.






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






45. 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






46. Selection for the ability to obtain a mate






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






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






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. Separates DNA by size