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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. Because of base pairing in DNA the amount of






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






3. 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.






4. Dna moves during electrophoresis because of...






5. Pea plants






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






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






8. A process where the organisms that have traits that aid in its survival (adaptive traits) will reproduce to pass that trait to futher generations thus increasing the frequency of that trait in the population. Vice versa traits that reduce the chance






9. Process by which a ribosome uses the code on mRNA to make proteins






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






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






12. The environmental factors that favour certain phenotypes






13. Found only in that country






14. Gene

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






16. Any indirect evidence of life preserved as an impression in rock; trails - footprints - tracks - burrows - and bite marks






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






18. The evolutionary history/geneology of a group of organisms (a tree thingy)






19. Visual expression of a trait






20. An organism that has characteristics resulting from chromosomal alteration. This is a result of crossing over of the chromosomes during Meiosis - mutations and random segregation.






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






22. 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.






23. Separates DNA by size






24. Translation occurs in the...






25. Situation in which allele frequencies remain constant






26. Any preserved remains of an organism from the past. Usually found in sedimentary rock.






27. Condition in which an organism has extra sets of chromosomes






28. T or F A cloned organism has the same proteins as another organism






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






30. Transcrition occurs in the...






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






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






33. Organ that serves no useful function in an organism






34. Periods of little adaptive change






35. 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






36. Is a trait that is more expressed than another trait. Is written in capital letters for Genotype. E.g Tall genotype is TT or Tt where T is the allele for tall trait and t is the trait for small. T will be expressed more.






37. Trait evolves overtime; NO common ancestry






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. A group of organisms of the same species occupying a given area.






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






41. The final product of transcription is...






42. Gradual evolution within a lineage






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






44. Determined the complete double helical structure of DNA






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






46. Chromosomes are collections of many






47. The study of the past and present distribution of species.






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






49. Synonym for protein; chain of amino acids






50. T or F a codon consist of three nucleotides