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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 complete genetic material contained in an individual






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






3. Visual expression of a trait






4. The final product of transcription is...






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






6. A limb with five digits (fingers)






7. Describes the existence of a prezygotic reproductive barrier between two species as a result of them occupying or breeding in different habitats within the same general geographical area






8. DNA that is coiled around proteins






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






10. The specific location of a gene on a chromosome






11. Similar DNA sequences or protein structures (such as hemoglobin) may link different species to a similar ancestor.






12. process in which homologous chromosomes exchange portions of their chromatids during meiosis.






13. A nucleotide of RNA is made of...






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






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






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






18. T or F a codon consist of three nucleotides






19. Organisms with similar functions - but different underlying structure. Example: bird and insect wing. These structures do NOT show a common ancestral link.






20. Evolution resulting from small specific genetic changes that can lead to a new subspecies






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






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






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






24. The backbone of DNA consist of...






25. 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






26. Proteins are made of...






27. 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.






28. Gradual evolution within a lineage






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






30. 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.






31. Synonym for protein; chain of amino acids






32. A group of organisms whose members are sufficiently alike to be able to reproduce and produce fertile offspring and who are unable to reproduce with other such groups






33. An ancestor that two or more descendants have in common






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






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






36. Hybrid is sterile so biologically unfit






37. shape of a DNA molecule formed when two twisted DNA strands are coiled into a springlike structure and held together by hydrogen bonds between the bases.






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






39. When F1 is fully fertile but F2 has low fertility (rice - cotton)






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






41. The condition in which there is no change in allele frequencies from generation to generation (i.e. no evolution)






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






43. The comparison of the structures of different organisms






44. DNA is made of...






45. Evolution of superficial phenotypic similarity of form as a result of similar selection pressures






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






47. All the factors in an organism's surroundings that can potentially affect it






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






49. Any preserved remains of an organism from the past. Usually found in sedimentary rock.






50. Natural selection that causes the frequency of a particular allele to move in one direction