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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 backbone of DNA consist of...






2. The gradual changes in gene frequencies in a population due to random events






3. Features that are superficially similar but have different modes of development






4. Proteins are made of...






5. The adaptive increase in pigmentation as a result of human - induced pollutants






6. A combining of genes or characters different from what they were in the parents






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






8. 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.






9. The complete genetic material contained in an individual






10. Which structure contains anticodons






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






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






13. 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






14. Another name for a gene






15. An evolutionary 'branch' and its daughter 'twigs'






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






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






18. Hybrid is sterile so biologically unfit






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






20. What happens during the process of translation






21. Periods of little adaptive change






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






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






24. Reciprocal evolution in two species as a result of the selection pressure each imposes upon the other






25. A small simple structure (as a fertilized egg) from which new tissue can develop into a complete organism. It is also a cell






26. Independent segregation of genes during the formation of gametes






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






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






29. Situation in which allele frequencies remain constant






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






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






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






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






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






35. Different alleles for a gene






36. Dna moves during electrophoresis because of...






37. Trait evolves overtime; NO common ancestry






38. T or F a codon consist of three nucleotides






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






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






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






42. During transcription an RNA molecule is formed






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






44. 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.






45. Is active during transcription






46. Change to a chromosome in which a fragment of the chromosome is removed






47. Ribosomes are made of...






48. A codon is made of...






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






50. What does DNA stand for...