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






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






3. Group of individuals of the same species that live in the same area






4. Is active during transcription






5. Determined the concept of complementary base pairing






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






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






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






9. Copying the code from DNA onto mRNA






10. Change to a chromosome in which a fragment of one chromosome attaches to a nonhomologous chromosome






11. The type of environment in which an organism or group normally lives or occurs






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






13. Is a sequence of DNA that codes for a protein and thus determines a trait. This is because the sequence of bases code for certain proteins.






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






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






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






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






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






19. DNA is made of...






20. Synonym for protein; chain of amino acids






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






22. Organ that serves no useful function in an organism






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






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






25. Condition in which an organism has extra sets of chromosomes






26. T or F A cloned organism has the same proteins as another organism






27. Shows how the embryos of different groups resemble each other at particular stages. Similarities indicate groups may share a common ancestor






28. Periods of little adaptive change






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






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






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






32. Is found in DNA






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






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






35. 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.






36. T or F a codon consist of three nucleotides






37. A group of organisms of the same species occupying a given area.






38. Uses metamorphic or igneous rock - calculates the age of an object by assessing the amount of radioactive element still present in the organism. Radioactive elements are slowly lost over time because of decay.






39. Heteros have a phenotype tintertmediate b/t phenotypes of the 2 homoz






40. How many codons are needed to specify three amino acids






41. One of the identical rods of a chromosome.






42. The sum total of an organism's requirements; its way of life






43. 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






44. Describes a cell - nucleus - or organism that has only one set of unpaired chromosomes






45. When a few individuals become isolated from a larger population - this smaller group may establish a new population whose gene pool is different from their source population.






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






47. Features that are superficially similar but have different modes of development






48. Building block of a protein






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






50. Any indirect evidence of life preserved as an impression in rock; trails - footprints - tracks - burrows - and bite marks