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. In the event of a sperm fertilizing an egg of another species - mechanisms that prevent result being fruitful






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






3. Gradual evolution within a lineage






4. The final product of transcription is...






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






6. Which structure contains anticodons






7. Is a base found in DNA and RNA. In DNA its partner is Thymine. In RNA its partner is Uracil






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






9. Era of recent life that began about 66 million years ago and continues today; includes the first appearance Hominids






10. Structure present in an organism however does NOT have a known function. May link organisms with similar vestigial structures. Example: appendix - coccyx bone - whale leg bones.






11. Geologic period that followed the Precambrian;means 'ancient life' - early life (570-286 million years ago); single cell organisms - shells - mollusks - rise of first vertebrates - rise of land plants - amphibians - insects - seed plants - and trees






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






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






14. Situation in which allele frequencies remain constant






15. Innate trait; shared ancestry






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






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






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






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






20. 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






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






22. The movement of individuals into an area






23. Periods of little adaptive change






24. Mating of 2 oism that differ in 2 characters






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






26. 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.






27. Is found in DNA






28. Hybrid is sterile so biologically unfit






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






30. A type of barrier between species; the species remain isolated because male and femal gametes of the different species cannot fuse - or they die before they unite.






31. Mutation where an extra base is added






32. Synonym for protein; chain of amino acids






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






34. Organ no longer serves a function






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






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






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






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






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






40. Describes a cell - nucleus - or organism that has only one set of unpaired chromosomes






41. A fossil known to have lived in a particular geologic age that can be used to date the rock layer in which it is found






42. A change in the base sequence of a gene






43. A type of natural selection in which genetic diversity decreases as the population stabilises on a particular trait value






44. Breeding organisms with specific traits in order to produce offspring with identical traits






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






46. Identical alleles for a gene






47. Nucleotides that control which amino acids are added during protein synthesis






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






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






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