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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. Mating of 2 oism that differ in 2 characters






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






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






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






5. Nucleotides that control which amino acids are added during protein synthesis






6. The environmental factors that favour certain phenotypes






7. A unique combination of traits that are passed down from one generation to another.






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






9. Actual remains of an organism such as bones - teeth - shells - etc.






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






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






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






13. Form of reproductive isolation in which tere are differences in species courtship behavior






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






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






16. Ribosomes are made of...






17. The backbone of DNA consist of...






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






19. Selection against one end of a range of variation - resulting in a progressive change in allele frequency






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






21. A geographic gradient in the extent to which a character is developed in a species






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






23. Organ that serves no useful function in an organism






24. The comparison of the structures of different organisms






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






26. Three mRNA nucleotides that code for a specific amino acid






27. Is found in DNA






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






29. 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.






30. Periods of little adaptive change






31. Movement of organisms ro of from a population






32. DNA is made of...






33. 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






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






35. Molecules that join together to form DNA and RNA. Monomers that make up a nucleic acid






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






37. 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.






38. Determined the complete double helical structure of DNA






39. Mutation where an extra base is added






40. A type of protein molecule found in the chromosomes of eukaryotic cells but not prokaryotic cells






41. In the event of a sperm fertilizing an egg of another species - mechanisms that prevent result being fruitful






42. Is a base found in DNA and RNA. In DNA its partner is Thymine. In RNA its partner is Uracil






43. The adaptive increase in pigmentation as a result of human - induced pollutants






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






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






46. Copying the code from DNA onto mRNA






47. Another term for pure breeding






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






49. 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.






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







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