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






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






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






4. How many codons are needed to specify three amino acids






5. DNA that is coiled around proteins






6. Method of replication that implies that each new strand of DNA is half original and half new






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






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






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






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






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






12. A distinct population of a species that varies from other populations of the same species.






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






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






15. When F1 is fully fertile but F2 has low fertility (rice - cotton)






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






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






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






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






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






21. Deoxyribonucleic acid carries the genetic code for the proper functioning of an organism. It is composed of 5 carbon sugar (deoxyribose) four bases Adenine - Thymine - Cytosine and Guanine. the sugar is bonded to a phosphate group. This forms a long






22. Uses metamorphic or igneous rock - calculates the age of an object by assessing the amount of radioactive element still present in the organism. Radioactive elements are slowly lost over time because of decay.






23. The final product of transcription is...






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






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






26. How often a form of a gene appears in a gene pool






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






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






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






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






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






32. 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.






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






34. What is one benefit for having two strands of DNA?






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






36. 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






37. The type of environment in which an organism or group normally lives or occurs






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






39. All the factors in an organism's surroundings that can potentially affect it






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






41. Found only in that country






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






43. Organ no longer serves a function






44. Form of reproductive isolation in which tere are differences in species courtship behavior






45. 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.






46. A limb with five digits (fingers)






47. T or F a codon consist of three nucleotides






48. Relatively rapid proliferation from an ancestral type into new types which fill a diversity of ecological niches






49. A type of protein molecule found in the chromosomes of eukaryotic cells but not prokaryotic cells






50. Speciation preceded by a period of geographical isolation