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






3. Translation occurs in the...






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






5. Hybrid is sterile so biologically unfit






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






7. Selection for the ability to obtain a mate






8. Situation in which allele frequencies remain constant






9. Process by which individuals that are better suited to their environment survive and reproduce most successfully; also called survival of the fittest






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






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






12. Speciation which does not involve a period of geographical separation






13. Separates DNA by size






14. Another name for a gene






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






16. DNA is made of...






17. Copying the code from DNA onto mRNA






18. Process in which DNA is duplicated






19. Recognize and cut DNA at specific sequences usually palindromes






20. A point of overlap of paired chromatids at which fusion and exchange of genetic material (crossing over) occurs during prophase I of meiosis.






21. All the genes in a population. genes are added by reproduction and immigration and lost by death and emigration






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






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






25. Building block of a protein






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






27. Cross where you cross unknown genotype with a recessive






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






29. DNA that is coiled around proteins






30. Populations that can interbreed with neighboring populations but not with populations separated by larger geographical distances






31. 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






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






33. A distinct population of a species that varies from other populations of the same species.






34. Inherited feature that tends to prevent species from interbreeding with other species






35. Periods of rapid evolution punctuated by periods of little change






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






37. Change to a chromosome in which a fragment of the chromosome is removed






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






39. 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.






40. Natural disaster eliminates most of the population - members left contribute the alleles for the new population.






41. Any agent that can cause a change in DNA






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






43. A nucleotide of RNA is made of...






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






45. Form of reproductive isolation in which structural differences in the anatomy of reproductive organs prevent sperm transfer between individuals of different species






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






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






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






49. A process where the organisms that have traits that aid in its survival (adaptive traits) will reproduce to pass that trait to futher generations thus increasing the frequency of that trait in the population. Vice versa traits that reduce the chance






50. Gene

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