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. Change in allele frequencies as a result of the migration of a small subgroup of a population






2. Group of similar organisms that can breed and produce fertile offspring






3. Is found in DNA






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






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






6. Individual that is heterozygous for two traits; shows the phenotype governed by the dominant alleles but carries the recessive alleles






7. The final product of transcription is...






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






9. Situation in which allele frequencies remain constant






10. Movement of alleles into or out of a population due to the migration of individuals to or from the population






11. The formation of new species as a result of evolution






12. Cell division in which the nucleus divides into nuclei containing the same number of chromosomes. Mitosis involves growth and repair and occurs in the body cells.






13. A nucleotide of RNA is made of...






14. The signal on a mRNA molecule that designates the end of the coding sequence is called the...






15. Is a base found in DNA and RNA. Cytosine pairs with Guanine in DNA






16. process in which homologous chromosomes exchange portions of their chromatids during meiosis.






17. Describes the isolation of a physical barrier e.g. body of water (ocean) or mountains






18. Visual expression of a trait






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






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






21. Speciation preceded by a period of geographical isolation






22. Chromosomes that determine the sex of an individual. These are X for female and Y for male. The female egg is an X while the male sperm can be X or Y






23. Any agent that can cause a change in DNA






24. Change in a DNA sequence that affects genetic information






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






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






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






28. Evolution resulting from small specific genetic changes that can lead to a new subspecies






29. Innate trait; shared ancestry






30. Mating of an individual of unknown genotype but dominant phenotype w/ a homozygous recessive individual






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






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






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






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






35. Independent segregation of genes during the formation of gametes






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






37. Layers of compressed sedimentary rock demonstrate the order or sequence at which events occurred. Cannot delineate the exact point of time - but is able to distinguish the order of events.






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






39. Organisms with similar functions - but different underlying structure. Example: bird and insect wing. These structures do NOT show a common ancestral link.






40. Three dimensional shape of organism made from a mold. May be created with plaster or over time with minerals.






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






42. The reduction of a population - typically by a natural disaster - such that the surviving population is no longer genetically representative of the original population.






43. Organ no longer serves a function






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






45. Change of an organism over time. This can be caused by changes in in habitat or need to adapt for survival.






46. When a few individuals become isolated from a larger population - this smaller group may establish a new population whose gene pool is different from their source population.






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






48. Found only in that country






49. 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






50. The sum total of an organism's requirements; its way of life