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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. 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.






2. T or F If a nucleic acid contain uracil it is DNA






3. Trait where heterozygous is a blending of two alleles






4. Recognize and cut DNA at specific sequences usually palindromes






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






6. Change to a chromosome in which a fragment of the chromosome is removed






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






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






9. Movement of organisms ro of from a population






10. Separates DNA by size






11. Natural disaster eliminates most of the population - members left contribute the alleles for the new population.






12. What does DNA stand for...






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






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






15. Building block of a protein






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






17. 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.






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






19. Used x ray cyrstallography to create an image of DNA






20. Gradual evolution within a lineage






21. Transcrition occurs in the...






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. A body cell






24. Is a base found in DNA and RNA. Cytosine pairs with Guanine in DNA






25. Situation in which allele frequencies remain constant






26. A trait that masks the expression of another trait






27. The capacity of an individual of certain genotype to reproduce. It is usually equal to the proportion of the individual's genes in all the genes of the next generation






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






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






30. Innate trait; shared ancestry






31. Mutation where an extra base is added






32. Disappearance of a species from all parts of its geographical range






33. process in which homologous chromosomes exchange portions of their chromatids during meiosis.






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






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






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






37. Gene

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38. What happens during the process of translation






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






40. Threadlike structure within the nucleus containing the genetic information that is passed from one generation of cells to the next






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






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






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






44. Deoxyribonucleic acid carries the genetic code for the proper functioning of an organism. It is composed of 5 carbon sugar (deoxyribose) four bases Adenine - Thymine - Cytosine and Guanine. the sugar is bonded to a phosphate group. This forms a long






45. 2 alleles for a character separate during the formation of gametes - so that each gamete only carriers one allele for each character

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46. Determined the complete double helical structure of DNA






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






48. Ribosomes are made of...






49. Which structure contains anticodons






50. 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