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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. A codon is made of...






2. Proteins are made of...






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






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






5. Determined the concept of complementary base pairing






6. Are noncoding sequences in the gene that are removed from RNA after transcription






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






8. The movement of genes between populations as a result of mating of migration






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






10. A fossil known to have lived in a particular geologic age that can be used to date the rock layer in which it is found






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






12. Translation occurs in the...






13. The comparison of the structures of different organisms






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






15. 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






16. It means chromosomes are paired. One of each chromosome in a pair originates from the father and one from the mother. They affect the same trait - but don't necessarily cause the same expression of the trait.






17. 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.






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






19. How often a particular gene occurs in the population






20. Chromosomes that determine the sex of an individual. These are X for female and Y for male. The female egg is an X while the male sperm can be X or Y






21. A small simple structure (as a fertilized egg) from which new tissue can develop into a complete organism. It is also a cell






22. A taxon originating from and including a single common ancestor






23. 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






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






25. A copy of a gene is made during a process called this






26. Middle life (245-144 million years ago); rise of mammals and dinosaurs; the rise of birds; extinction of dinosaurs - rise of flowering plants






27. Is a base found in DNA and RNA. Cytosine pairs with Guanine in DNA






28. Synonym for protein; chain of amino acids






29. Identical alleles for a gene






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






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






32. One of the types of fossils made from hardened tree resin. Preserves both hard and soft parts.






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






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






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






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






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






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






39. Hybrid is sterile so biologically unfit






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






41. Separates DNA by size






42. 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.






43. 2 alleles for a character separate during the formation of gametes - so that each gamete only carriers one allele for each character

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






45. The movement of individuals into an area






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






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






48. Relatively rapid proliferation from an ancestral type into new types which fill a diversity of ecological niches






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






50. A nucleotide of RNA is made of...






Can you answer 50 questions in 15 minutes?



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