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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. Individual that is heterozygous for two traits; shows the phenotype governed by the dominant alleles but carries the recessive alleles






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






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






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






6. A change in the base sequence of DNA; the ultimate source of new alleles






7. Is a base found in DNA and RNA. In DNA its partner is Thymine. In RNA its partner is Uracil






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






9. Describes the isolation of a physical barrier e.g. body of water (ocean) or mountains






10. Term used to refer to an organism that has two different alleles for the same trait. e.g Tt is the heterozygous genotype for Tall.






11. Term used to refer to an organism that has two identical alleles for a particular trait. e.g TT is the homozygous genotype for Tall.






12. Because of base pairing in DNA the amount of






13. The reduction of a population - typically by a natural disaster - such that the surviving population is no longer genetically representative of the original population.






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






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






16. The comparison of the structures of different organisms






17. Mating of 2 oism that differ in 2 characters






18. Identical alleles for a gene






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






20. Cell division that produces reproductive cells or gamates.This occurs in the gonads (testicle and ovaries in animals) Here the chromosome number is halved the original amount. (each new cell has a haploid number = n) All daughter cells are not geneti






21. 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.






22. Building block of a protein






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






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






25. What does DNA stand for...






26. Hybrid is sterile so biologically unfit






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






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






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






30. Earth's history organized into four eras: Precambrian - Paleozoic - Mesozoic - and Cenozoic






31. Speciation preceded by a period of geographical isolation






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






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






34. Genes contain instructions for assembling






35. Gene

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






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






38. The complete genetic material contained in an individual






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






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






41. The backbone of DNA consist of...






42. Mating of an individual of unknown genotype but dominant phenotype w/ a homozygous recessive individual






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






44. Trait where heterozygous is a blending of two alleles






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






46. Is the evolutionary process whereby a population becomes better suited to its habitat






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






48. Movement of organisms ro of from a population






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






50. A DNA strand that has the bases CTAATGT forms a complete complementary double helix with