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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. Predicts the possible outcome of a genetic cross.






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






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






4. Organisms with a similar underlying structure - but different function. Example: bird - bat and dolphin 'arm'. Shows a common ancestral link.






5. Visual expression of a trait






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






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






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






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






10. These prevent fertilization between species e.g. diff breeding season - mating behaviour






11. Which structure contains anticodons






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






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






14. Describes the existence of a prezygotic reproductive barrier between two species as a result of them occupying or breeding in different habitats within the same general geographical area






15. Pea plants






16. Process in which DNA is duplicated






17. Similar DNA sequences or protein structures (such as hemoglobin) may link different species to a similar ancestor.






18. 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






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






20. Type of rock made from small pieces of other rocks and organisms pressed together. Source of fossil preservation. Limited radioactive or absolute dating potential.






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






22. How often a particular gene occurs in the population






23. A body cell






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






25. Proteins are made of...






26. Transcrition occurs in the...






27. Innate trait; shared ancestry






28. A nucleotide of RNA is made of...






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






30. Genes contain instructions for assembling






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






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






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






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






35. Gene

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






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






38. Earth's history organized into four eras: Precambrian - Paleozoic - Mesozoic - and Cenozoic






39. Process by which individuals that are better suited to their environment survive and reproduce most successfully; also called survival of the fittest






40. Is any chromosome that is not a sex chromosome.






41. Trait evolves overtime; NO common ancestry






42. A group of organisms of the same species occupying a given area.






43. The movement of genes between populations as a result of mating of migration






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






45. 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






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






47. Term used to refer to an organism that has two different alleles for the same trait. e.g Tt is the heterozygous genotype for Tall.






48. Is active during transcription






49. Gradual evolution within a lineage






50. Similar embryological structures in different species - such as gill slits - may demonstrate that these species share a common ancestor.