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






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






3. An equilibrium in the occurence of two or more different froms within the same population usually caused by different allele combiinations of a gene






4. Genes contain instructions for assembling






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






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






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






8. A codon is made of...






9. How often a particular gene occurs in the population






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






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






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






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






14. Because of base pairing in DNA the amount of






15. The specific location of a gene on a chromosome






16. Another name for a gene






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






18. A process that results in an allele having a different probability of remaining in the gene pool compared with that of another allele






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






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






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






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






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






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






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






26. The number of times an allele appears in a population






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






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






29. When zygote does not complete development or is physically weaker than normal






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






31. Transfer RNA; type of RNA that carries amino acids to the ribosome






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






33. A body cell






34. 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.






35. Threadlike structure within the nucleus containing the genetic information that is passed from one generation of cells to the next






36. The comparison of the structures of different organisms






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






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






39. 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.






40. Copying the code from DNA onto mRNA






41. Even if the gametes of the two species meet - fertilization does not occur






42. Cell division in which the nucleus divides into nuclei containing the same number of chromosomes. Mitosis involves growth and repair and occurs in the body cells.






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






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






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






46. Situation in which allele frequencies remain constant






47. Process in which DNA is duplicated






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






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. Determined the concept of complementary base pairing