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






2. An ancestor that two or more descendants have in common






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






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






5. 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.






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






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






8. Evolution resulting from small specific genetic changes that can lead to a new subspecies






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






10. Two alternative forms of a gene e.g Tall vs Short






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






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






13. Method of replication that implies that each new strand of DNA is half original and half new






14. A process that results in an allele having a different probability of remaining in the gene pool compared with that of another allele






15. All the genes in a population. genes are added by reproduction and immigration and lost by death and emigration






16. Different alleles for a gene






17. The evolutionary process by which a species becomes better suited to its niche.






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






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






20. Determined the complete double helical structure of DNA






21. Type of sympatric speciation that occurs when a new species is formed because of a change in microhabitats






22. The complete genetic material contained in an individual






23. Is found in DNA






24. Selection against one end of a range of variation - resulting in a progressive change in allele frequency






25. Gene

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26. Ribosomal RNA; type of RNA that makes up part of the ribosome






27. Form of reproductive isolation in which two populations reproduce at different times






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






29. Another term for pure breeding






30. The backbone of DNA consist of...






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






32. 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






33. Building block of a nucleic acid (DNA and RNA)






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






35. 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.






36. Cross where you cross unknown genotype with a recessive






37. Translation occurs in the...






38. Proteins are made of...






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






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






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






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






43. 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.






44. Organ that serves no useful function in an organism






45. Process by which individuals that are better suited to their environment survive and reproduce most successfully; also called survival of the fittest






46. A trait that masks the expression of another trait






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






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






49. Movement of organisms ro of from a population






50. 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