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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. Determined the complete double helical structure of DNA






2. Is active during transcription






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






4. 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.






5. Evolutionary process in which a species or related species folllow different evolutionary paths to eventually become less related






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






7. 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.






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






9. The study of the structures of different organisms - looking at homologous parts






10. Transfer RNA; type of RNA that carries amino acids to the ribosome






11. Situation in which allele frequencies remain constant






12. How often a particular gene occurs in the population






13. T or F a codon consist of three nucleotides






14. Are noncoding sequences in the gene that are removed from RNA after transcription






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






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






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






18. Natural selection that causes the frequency of a particular allele to move in one direction






19. Separation of species or populations so that they cannot interbreed and produce fertile offspring






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






21. A group of organisms whose members are sufficiently alike to be able to reproduce and produce fertile offspring and who are unable to reproduce with other such groups






22. Group of similar organisms that can breed and produce fertile offspring






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






24. The adaptive increase in pigmentation as a result of human - induced pollutants






25. Trait evolves overtime; NO common ancestry






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






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






28. A small simple structure (as a fertilized egg) from which new tissue can develop into a complete organism. It is also a cell






29. The individuals choice of which mate they will choose. The choice is dependant on what traits the individual finds attractive. e.g some people will want their mates to be smart or pretty.






30. Physical characteristics of an organism based on its genotype. e.g. Plant that has a genotype of TT will have a phenotype of Tall.






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






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






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






34. 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






35. Organ no longer serves a function






36. Populations that can interbreed with neighboring populations but not with populations separated by larger geographical distances






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






38. It is the time from when the Earth formed and simple life - forms evolved (and it is the longest era)






39. 2 alleles for a character separate during the formation of gametes - so that each gamete only carriers one allele for each character


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






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






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






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






44. A trait that masks the expression of another trait






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






46. Another term for pure breeding






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






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






49. Organ that serves no useful function in an organism






50. Reciprocal evolution in two species as a result of the selection pressure each imposes upon the other