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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. A group of organisms whose members are sufficiently alike to be able to reproduce and produce fertile offspring and who are unable to reproduce with other such groups






2. 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.






3. Natural selection that causes the frequency of a particular allele to move in one direction






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






5. How many codons are needed to specify three amino acids






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






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






8. The number of times an allele appears in a population






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






10. Visual expression of a trait






11. Movement of organisms ro of from a population






12. 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.






13. Is found in DNA






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






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






16. Determined the concept of complementary base pairing






17. Even if the gametes of the two species meet - fertilization does not occur






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






19. The final product of transcription is...






20. Consists of all genes - including all the different alleles - that are present in a population






21. T or F a codon consist of three nucleotides






22. 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.






23. Identical alleles for a gene






24. DNA is made of...






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






26. Term used to refer to an organism that has two identical alleles for a particular trait. e.g TT is the homozygous genotype for Tall.






27. Dna moves during electrophoresis because of...






28. Trait evolves overtime; NO common ancestry






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






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






31. Situation in which allele frequencies remain constant






32. One of the types of fossils made from hardened tree resin. Preserves both hard and soft parts.






33. Populations that can interbreed with neighboring populations but not with populations separated by larger geographical distances






34. An episode of large - scale extinction affecting many different groups of organisms within a short period of time






35. Separation of species or populations so that they cannot interbreed and produce fertile offspring






36. Pea plants






37. Building block of a protein






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






39. Selection against one end of a range of variation - resulting in a progressive change in allele frequency






40. Shows how the embryos of different groups resemble each other at particular stages. Similarities indicate groups may share a common ancestor






41. Another name for a gene






42. Nucleotides that control which amino acids are added during protein synthesis






43. A type of protein molecule found in the chromosomes of eukaryotic cells but not prokaryotic cells






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






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






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






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






48. A mutation in which one nucleotide is replaced by another nucleotide






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






50. A change or error in the DNA sequence