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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. Pea plants






2. The offspring of a cross between two inbred lines within a single species. May also refer to the offspring of across between two species






3. 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.






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






5. One of the types of fossils made from hardened tree resin. Preserves both hard and soft parts.






6. Messenger RNA; type of RNA that carries instructions from DNA in the nucleus to the ribosome






7. During transcription an RNA molecule is formed






8. Independent segregation of genes during the formation of gametes






9. DNA is made of...






10. Organism is preserved at very low temperatures. Preservation of both hard and soft parts can occur.






11. Separates DNA by size






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. Ribosomes are made of...






14. The movement of individuals into an area






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






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






17. 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






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






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






20. Change in a DNA sequence that affects genetic information






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






22. Synonym for protein; chain of amino acids






23. Speciation preceded by a period of geographical isolation






24. It means chromosomes are paired. One of each chromosome in a pair originates from the father and one from the mother. They affect the same trait - but don't necessarily cause the same expression of the trait.






25. 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.






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






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






28. A pairing where the parent plants differ in only one character.






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






30. Describes the existence of a prezygotic reproductive barrier between two species as a result of them occupying or breeding in different habitats within the same general geographical area






31. Of a cell or organism having two sets of homologous chromosomes or twice the haploid number






32. A body cell






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






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






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






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






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






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






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






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






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






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






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






44. A codon is made of...






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






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






47. Types of rocks formed after exposure to very high heat. Because of the high temperatures - fossils are not able to be recovered from these types of rocks. Absolute or radioactive dating is possible - however.






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






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






50. Trait where heterozygous is a blending of two alleles