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






2. A model for the evolution of different froms over a long period of time but with only slight chchanges occring between successive generations






3. The movement of individuals into an area






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






5. A nucleotide of RNA is made of...






6. Different alleles for a gene






7. Three dimensional shape of organism made from a mold. May be created with plaster or over time with minerals.






8. 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.






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






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






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






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






13. Independent segregation of genes during the formation of gametes






14. Evolution of the earth - which is hypothesized to have been formed over 4.6 billion years ago.






15. Another term for pure breeding






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






17. Similar DNA sequences or protein structures (such as hemoglobin) may link different species to a similar ancestor.






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






19. A codon is made of...






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






21. DNA that is coiled around proteins






22. 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.






23. Building block of a protein






24. Selection acting against the middle of a range of variation






25. Chromosomes are collections of many






26. Is any chromosome that is not a sex chromosome.






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






28. Is the genetic makeup of an organism (TT or Tt) ; All the combinations of genes you have for a certain trait.






29. A distinct population of a species that varies from other populations of the same species.






30. Breeding organisms with specific traits in order to produce offspring with identical traits






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






32. A genetic crosses that involve one trait. e.g TT plant crossed with tt plant has offspring who are heterozygous Tt.






33. Any agent that can cause a change in DNA






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






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






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






37. T or F a codon consist of three nucleotides






38. A trait that masks the expression of another trait






39. Describes a cell - nucleus - or organism that has only one set of unpaired chromosomes






40. The final product of transcription is...






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






42. 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






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






44. Trait evolves overtime; NO common ancestry






45. A body cell






46. Cell division in which the nucleus divides into nuclei containing the same number of chromosomes. Mitosis involves growth and repair and occurs in the body cells.






47. A change or error in the DNA sequence






48. 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.






49. A type of barrier between species; the species remain isolated because male and femal gametes of the different species cannot fuse - or they die before they unite.






50. Innate trait; shared ancestry






Can you answer 50 questions in 15 minutes?



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