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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. Separates DNA by size






3. To create a recombinant DNA molecule - one would have to first cut two DNAs with creating before pasting them together






4. Actual remains of an organism such as bones - teeth - shells - etc.






5. Which structure contains anticodons






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






7. Is found in DNA






8. Transfer RNA; type of RNA that carries amino acids to the ribosome






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






10. Translation occurs in the...






11. What happens during the process of translation






12. Mutation where an extra base is added






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






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






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






16. Transcrition occurs in the...






17. A point of overlap of paired chromatids at which fusion and exchange of genetic material (crossing over) occurs during prophase I of meiosis.






18. Trait evolves overtime; NO common ancestry






19. Periods of little adaptive change






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






21. Proteins are made of...






22. Different alleles for a gene






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






24. A unique combination of traits that are passed down from one generation to another.






25. 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.






26. 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






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






28. 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.






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






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






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






32. Recognize and cut DNA at specific sequences usually palindromes






33. Selection acting against the extremes of a range of variation - resulting in resistance to change in allele frequencies






34. Impression made from a organism in soft material such as sand or mud.






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






36. Determined the complete double helical structure of DNA






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






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






39. Inherited feature that tends to prevent species from interbreeding with other species






40. The enzyme that binds to the promoter region of a gene during transcription is called...






41. Large - scale evolutionary changes that take place over long periods of time






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






43. Form of reproductive isolation in which structural differences in the anatomy of reproductive organs prevent sperm transfer between individuals of different species






44. Ribosomes are made of...






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






46. A type of natural selection in which genetic diversity decreases as the population stabilises on a particular trait value






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






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






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






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