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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. The complete genetic material contained in an individual






2. 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.






3. 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






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






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






6. 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.






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






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






9. The molecules responsible for bringing amino acids to the ribosome during protein synthesis are






10. Shows how the embryos of different groups resemble each other at particular stages. Similarities indicate groups may share a common ancestor






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






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






13. The preserved remains or traces of an organism that lived in the past






14. An episode of large - scale extinction affecting many different groups of organisms within a short period of time






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






16. Speciation preceded by a period of geographical isolation






17. Which structure contains anticodons






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






19. 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.






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






21. Type of rock made from small pieces of other rocks and organisms pressed together. Source of fossil preservation. Limited radioactive or absolute dating potential.






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






23. Identical alleles for a gene






24. Form of reproductive isolation in which structural differences in the anatomy of reproductive organs prevent sperm transfer between individuals of different species






25. Movement of organisms ro of from a population






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






27. Genes contain instructions for assembling






28. Selection for the ability to obtain a mate






29. Building block of a protein






30. Periods of little adaptive change






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






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






33. Gene

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






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






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






37. Is active during transcription






38. 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.






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






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






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






42. Pea plants






43. Molecules that join together to form DNA and RNA. Monomers that make up a nucleic acid






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






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






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






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






48. A codon is made of...






49. During transcription an RNA molecule is formed






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