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






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






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






4. A type of protein molecule found in the chromosomes of eukaryotic cells but not prokaryotic cells






5. The region of the chromosome that holds the two sister chromatids together during mitosis






6. 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.






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






8. Gradual evolution within a lineage






9. Determined the complete double helical structure of DNA






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






11. The banding pattern of a persons DNA after being cut and run on gel is called






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






13. Impression made from a organism in soft material such as sand or mud.






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






15. The specific location of a gene on a chromosome






16. Transcrition occurs in the...






17. Threadlike structure within the nucleus containing the genetic information that is passed from one generation of cells to the next






18. 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






19. These prevent fertilization between species e.g. diff breeding season - mating behaviour






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






21. The backbone of DNA consist of...






22. Process by which one species gives rise to two or more species






23. Evolution of the earth - which is hypothesized to have been formed over 4.6 billion years ago.






24. What happens during the process of translation






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






26. Visual expression of a trait






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






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






29. Is a trait that is more expressed than another trait. Is written in capital letters for Genotype. E.g Tall genotype is TT or Tt where T is the allele for tall trait and t is the trait for small. T will be expressed more.






30. Trait evolves overtime; NO common ancestry






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






32. Type of rock made from small pieces of other rocks and organisms pressed together. Source of fossil preservation. Limited radioactive or absolute dating potential.






33. A codon is made of...






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






35. The study relating the evolution of new charateristics to changes in the genes controlling development






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






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






38. You mate the unknown genotype with an organism showing the recessive trait. If any of the offspring show the recessive trait - the original unknown parent was heterozygous. If no recessive trats show up - the original parent was homozygous.






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






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






41. A unique combination of traits that are passed down from one generation to another.






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






43. Era of recent life that began about 66 million years ago and continues today; includes the first appearance Hominids






44. The complete genetic material contained in an individual






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






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






47. The comparison of the structures of different organisms






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






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






50. Cell division in which the nucleus divides into nuclei containing the same number of chromosomes. Mitosis involves growth and repair and occurs in the body cells.