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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 movement of genes between populations as a result of mating of migration






2. What does DNA stand for...






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






4. 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.






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






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






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






8. Used radioactive sulfur and radioactive phosphorus to determine that DNA is the genetic material - by demonstrating that it is DNA that is injected by bacteriophages into bacterial cells during infection






9. Of a cell or organism having two sets of homologous chromosomes or twice the haploid number






10. A pairing where the parent plants differ in only one character.






11. Form of reproductive isolation in which two populations reproduce at different times






12. The inherited characteristic often masked by the dominant characteristic and not seen in an organism. e.g. Tt plant will still be tall. Where T is the dominant trait for tall and t is the recessive trait for small.






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






14. A DNA double helix is held together in the center by between nitrogenous bases






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






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






17. The structure on a tRNA molecule that allows it interact with an mRNA molecule






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






19. A change or error in the DNA sequence






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






21. A type of barrier between species; the species remain isolated because male and femal gametes of the different species cannot fuse - or they die before they unite.






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






23. Molecules that join together to form DNA and RNA. Monomers that make up a nucleic acid






24. A trait that masks the expression of another trait






25. Chromosomes are collections of many






26. Embryos of similar organisms have very similar early development indicating similar DNA at work






27. 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.






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






29. The comparison of the structures of different organisms






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






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






32. How often a particular gene occurs in the population






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






34. The molecules responsible for bringing amino acids to the ribosome during protein synthesis are






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






36. Periods of little adaptive change






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






38. Transcrition occurs in the...






39. The final product of transcription is...






40. Because of base pairing in DNA the amount of






41. The environmental factors that favour certain phenotypes






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






43. The complete genetic material contained in an individual






44. Change of an organism over time. This can be caused by changes in in habitat or need to adapt for survival.






45. The offspring of a cross between two inbred lines within a single species. May also refer to the offspring of across between two species






46. Organ no longer serves a function






47. Describes the isolation of a physical barrier e.g. body of water (ocean) or mountains






48. Is active during transcription






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






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