Test your basic knowledge |

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






2. The capacity of an individual of certain genotype to reproduce. It is usually equal to the proportion of the individual's genes in all the genes of the next generation






3. Evolutionary process in which a species or related species folllow different evolutionary paths to eventually become less related






4. 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.






5. Determined the complete double helical structure of DNA






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






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






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






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






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






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






12. A DNA double helix is held together in the center by between nitrogenous bases






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






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






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






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






17. Another name for a gene






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






19. Any agent that can cause a change in DNA






20. Transcrition occurs in the...






21. Selection acting against the middle of a range of variation






22. Chromosomes are collections of many






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






24. Found only in that country






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






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






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






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






29. One of the identical rods of a chromosome.






30. Copying the code from DNA onto mRNA






31. Ribosomes are made of...






32. Change to a chromosome in which part of the chromosome is repeated






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






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






35. Determined the concept of complementary base pairing






36. Another term for pure breeding






37. Situation in which allele frequencies remain constant






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






39. 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.






40. Change to a chromosome in which a fragment of one chromosome attaches to a nonhomologous chromosome






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






42. Embryos of similar organisms have very similar early development indicating similar DNA at work






43. Speciation preceded by a period of geographical isolation






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






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






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






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






48. 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.






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






50. Natural disaster eliminates most of the population - members left contribute the alleles for the new population.