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






2. Predicts the possible outcome of a genetic cross.






3. Translation occurs in the...






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






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






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






7. Pea plants






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






9. Which structure contains anticodons






10. A type of barrier between species; the species remain isolated because male and femal gametes of the different species cannot fuse - or they die before they unite.






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






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






13. 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






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






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






16. A codon is made of...






17. Of a cell or organism having two sets of homologous chromosomes or twice the haploid number






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






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






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






21. Messenger RNA; type of RNA that carries instructions from DNA in the nucleus to the ribosome






22. Mutation where an extra base is added






23. Gene

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






25. Geologic period that followed the Precambrian;means 'ancient life' - early life (570-286 million years ago); single cell organisms - shells - mollusks - rise of first vertebrates - rise of land plants - amphibians - insects - seed plants - and trees






26. The reduction of a population - typically by a natural disaster - such that the surviving population is no longer genetically representative of the original population.






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






28. A DNA strand that has the bases CTAATGT forms a complete complementary double helix with






29. The movement of individuals into an area






30. A type of natural selection in which genetic diversity decreases as the population stabilises on a particular trait value






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






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






33. 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.






34. Copying the code from DNA onto mRNA






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






36. A DNA double helix is held together in the center by between nitrogenous bases






37. The preserved remains or traces of an organism that lived in the past






38. The formation of new species as a result of evolution






39. A body cell






40. What happens during the process of translation






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






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






43. The complete genetic material contained in an individual






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






45. Form of reproductive isolation in which two populations reproduce at different times






46. 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.






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






48. A limb with five digits (fingers)






49. Cross where you cross unknown genotype with a recessive






50. Organisms with a similar underlying structure - but different function. Example: bird - bat and dolphin 'arm'. Shows a common ancestral link.