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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. 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.






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






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






7. Separates DNA by size






8. 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.






9. Innate trait; shared ancestry






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






11. Cross where you cross unknown genotype with a recessive






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






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






14. Chromosomes are collections of many






15. Pea plants






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






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






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






19. Found only in that country






20. To create a recombinant DNA molecule - one would have to first cut two DNAs with creating before pasting them together






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






22. A limb with five digits (fingers)






23. Ribosomes are made of...






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






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






26. 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






27. 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.






28. Dna moves during electrophoresis because of...






29. A fossil known to have lived in a particular geologic age that can be used to date the rock layer in which it is found






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






31. Is found in DNA






32. What does DNA stand for...






33. The backbone of DNA consist of...






34. Genes contain instructions for assembling






35. 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.






36. A codon is made of...






37. Chromosomes that determine the sex of an individual. These are X for female and Y for male. The female egg is an X while the male sperm can be X or Y






38. Middle life (245-144 million years ago); rise of mammals and dinosaurs; the rise of birds; extinction of dinosaurs - rise of flowering plants






39. Another name for a gene






40. Human - like species that existed millions of years ago as witnessed through fossil evidence.






41. Is active during transcription






42. Gradual evolution within a lineage






43. In the event of a sperm fertilizing an egg of another species - mechanisms that prevent result being fruitful






44. Organ that serves no useful function in an organism






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






46. When competition causes two closely related species to become more different in regions where their ranges overlap






47. Heteros have a phenotype tintertmediate b/t phenotypes of the 2 homoz






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






49. A copy of a gene is made during a process called this






50. Is a base found in DNA and RNA. This base pairs with Cytosine in DNA