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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. Identical alleles for a gene






2. Physical characteristics of an organism based on its genotype. e.g. Plant that has a genotype of TT will have a phenotype of Tall.






3. What does DNA stand for...






4. Evolution resulting from small specific genetic changes that can lead to a new subspecies






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






6. When chromosome is changed by radiation and chemicals - results a permanent structural change in the chromosome - which will no longer be able to pair with its homologous pair. Eg - deletion - duplication - inversion and translocation.






7. Which structure contains anticodons






8. An organism that has characteristics resulting from chromosomal alteration. This is a result of crossing over of the chromosomes during Meiosis - mutations and random segregation.






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






10. Recognize and cut DNA at specific sequences usually palindromes






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






12. Is the evolutionary process whereby a population becomes better suited to its habitat






13. Translation occurs in the...






14. Determined the complete double helical structure of DNA






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






16. The movement of individuals into an area






17. Situation in which allele frequencies remain constant






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






19. Movement of organisms ro of from a population






20. Uses metamorphic or igneous rock - calculates the age of an object by assessing the amount of radioactive element still present in the organism. Radioactive elements are slowly lost over time because of decay.






21. The final product of transcription is...






22. Method of replication that implies that each new strand of DNA is half original and half new






23. Process by which an organism is slowly turned to stone as the body is replaced by minerals.






24. Cell division that produces reproductive cells or gamates.This occurs in the gonads (testicle and ovaries in animals) Here the chromosome number is halved the original amount. (each new cell has a haploid number = n) All daughter cells are not geneti






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






26. A limb with five digits (fingers)






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






28. A change in the base sequence of a gene






29. Gene

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30. During transcription an RNA molecule is formed






31. Features of different species tat are similar in function but not necessarily in structure and in which the similarity is not the result of common ancestry






32. Visual expression of a trait






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






34. 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.






35. How often a form of a gene appears in a gene pool






36. Structure present in an organism however does NOT have a known function. May link organisms with similar vestigial structures. Example: appendix - coccyx bone - whale leg bones.






37. Human - like species that existed millions of years ago as witnessed through fossil evidence.






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






39. 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.






40. Used x ray cyrstallography to create an image of DNA






41. Describes a cell - nucleus - or organism that has only one set of unpaired chromosomes






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






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






44. One of the identical rods of a chromosome.






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






46. Any agent that can cause a change in DNA






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






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






49. Three mRNA nucleotides that code for a specific amino acid






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






Can you answer 50 questions in 15 minutes?



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