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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. Mutation where an extra base is added






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






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






5. Trait where heterozygous is a blending of two alleles






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






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






8. The type of environment in which an organism or group normally lives or occurs






9. A base found in DNA (but not in RNA). This base pairs with Adenine.






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






11. Any agent that can cause a change in DNA






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






13. During transcription an RNA molecule is formed






14. Process in which DNA is duplicated






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






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






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






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






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






20. 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.






21. Genes contain instructions for assembling






22. Another name for a gene






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






24. The capacity of an individual of certain genotype to reproduce. It is usually equal to the proportion of the individual's genes in all the genes of the next generation






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






26. Pea plants






27. A population partially isolated from other populations of the same species






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






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






30. Organ no longer serves a function






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






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






33. Group of similar organisms that can breed and produce fertile offspring






34. T or F a codon consist of three nucleotides






35. 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.






36. Speciation preceded by a period of geographical isolation






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






38. Synonym for protein; chain of amino acids






39. Separates DNA by size






40. Organ that serves no useful function in an organism






41. The comparison of the structures of different organisms






42. A DNA strand that has the bases CTAATGT forms a complete complementary double helix with






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






44. Periods of rapid evolution punctuated by periods of little change






45. 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.






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






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






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






49. Is the genetic makeup of an organism (TT or Tt) ; All the combinations of genes you have for a certain trait.






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







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