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






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






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






4. Is the genetic makeup of an organism (TT or Tt) ; All the combinations of genes you have for a certain trait.






5. Three dimensional shape of organism made from a mold. May be created with plaster or over time with minerals.






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






7. During transcription an RNA molecule is formed






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






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






10. The final product of transcription is...






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






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






13. Proteins are made of...






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






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






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






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






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






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






20. DNA that is coiled around proteins






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






22. 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.






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






24. 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






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






26. Because of base pairing in DNA the amount of






27. Gradual evolution within a lineage






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






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






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






31. A change or error in the DNA sequence






32. Term used to refer to an organism that has two identical alleles for a particular trait. e.g TT is the homozygous genotype for Tall.






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






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






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






36. The movement of individuals into an area






37. What does DNA stand for...






38. Is active during transcription






39. Organ that serves no useful function in an organism






40. 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






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






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






43. Three mRNA nucleotides that code for a specific amino acid






44. Individual that is heterozygous for two traits; shows the phenotype governed by the dominant alleles but carries the recessive alleles






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






46. Breeding organisms with specific traits in order to produce offspring with identical traits






47. When competition causes two closely related species to become more different in regions where their ranges overlap






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






49. Change to a chromosome in which part of the chromosome is repeated






50. Disappearance of a species from all parts of its geographical range







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