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






2. Innate trait; shared ancestry






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






4. A model for the evolution of different froms over a long period of time but with only slight chchanges occring between successive generations






5. Translation occurs in the...






6. The banding pattern of a persons DNA after being cut and run on gel is called






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






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






9. Pea plants






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






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






12. Is a sequence of DNA that codes for a protein and thus determines a trait. This is because the sequence of bases code for certain proteins.






13. A change in the base sequence of DNA; the ultimate source of new alleles






14. A taxon originating from and including a single common ancestor






15. 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.






16. 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






17. A geographic gradient in the extent to which a character is developed in a species






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






19. DNA is made of...






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






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






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






23. Different alleles for a gene






24. 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.






25. Ribosomes are made of...






26. Heteros have a phenotype tintertmediate b/t phenotypes of the 2 homoz






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






28. The independant evolution of similar traits - starting from a similar ancestral condition






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






30. Visual expression of a trait






31. A process that results in an allele having a different probability of remaining in the gene pool compared with that of another allele






32. Science dealing with DNA and protein synthesis of living organisms. Manipulation of DNA.






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






34. Speciation preceded by a period of geographical isolation






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






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






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






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






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






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






41. Name for oism with one dominant and one recessive allele






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






43. What happens during the process of translation






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






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






46. Group of individuals of the same species that live in the same area






47. Independent segregation of genes during the formation of gametes






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






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






50. 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