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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. It means chromosomes are paired. One of each chromosome in a pair originates from the father and one from the mother. They affect the same trait - but don't necessarily cause the same expression of the trait.






2. 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.






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






4. Process in which DNA is duplicated






5. Structures in different but related species that are derived from the same ancestral structure but now serve different purposes.






6. Movement of alleles into or out of a population due to the migration of individuals to or from the population






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






8. Name for oism with one dominant and one recessive allele






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






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






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






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






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






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






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






16. The study of the structures of different organisms - looking at homologous parts






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






18. A type of natural selection in which genetic diversity decreases as the population stabilises on a particular trait value






19. Types of rocks formed after exposure to very high heat. Because of the high temperatures - fossils are not able to be recovered from these types of rocks. Absolute or radioactive dating is possible - however.






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






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






22. Geologic period that followed the Precambrian;means 'ancient life' - early life (570-286 million years ago); single cell organisms - shells - mollusks - rise of first vertebrates - rise of land plants - amphibians - insects - seed plants - and trees






23. Hybrid is sterile so biologically unfit






24. 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.






25. It is the time from when the Earth formed and simple life - forms evolved (and it is the longest era)






26. Is found in DNA






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






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






29. Gradual evolution within a lineage






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






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






32. The evolutionary process by which a species becomes better suited to its niche.






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






34. Building block of a protein






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






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






37. Cross where you cross unknown genotype with a recessive






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






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






40. Science dealing with DNA and protein synthesis of living organisms. Manipulation of DNA.






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






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






43. A geographic gradient in the extent to which a character is developed in a species






44. Evolution of living things - based on evidence from the past and present.






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






46. A change in the base sequence of a gene






47. Pea plants






48. The formation of new species as a result of evolution






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






50. T or F a codon consist of three nucleotides