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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. Process by which an organism is slowly turned to stone as the body is replaced by minerals.






2. Identical alleles for a gene






3. A point of overlap of paired chromatids at which fusion and exchange of genetic material (crossing over) occurs during prophase I of meiosis.






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






5. Situation in which allele frequencies remain constant






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






7. A type of protein molecule found in the chromosomes of eukaryotic cells but not prokaryotic cells






8. Periods of rapid evolution punctuated by periods of little change






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






10. Recognize and cut DNA at specific sequences usually palindromes






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






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






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






14. A population partially isolated from other populations of the same species






15. A trait that masks the expression of another trait






16. Embryos of similar organisms have very similar early development indicating similar DNA at work






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






18. A pairing where the parent plants differ in only one character.






19. Another name for a gene






20. What is one benefit for having two strands of DNA?






21. The study relating the evolution of new charateristics to changes in the genes controlling development






22. 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






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






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






25. Copying the code from DNA onto mRNA






26. Organ no longer serves a function






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






28. shape of a DNA molecule formed when two twisted DNA strands are coiled into a springlike structure and held together by hydrogen bonds between the bases.






29. Name for oism with one dominant and one recessive allele






30. The region of the chromosome that holds the two sister chromatids together during mitosis






31. Mutation where an extra base is added






32. 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.






33. Cross where you cross unknown genotype with a recessive






34. The study of the past and present distribution of species.






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






36. Used radioactive sulfur and radioactive phosphorus to determine that DNA is the genetic material - by demonstrating that it is DNA that is injected by bacteriophages into bacterial cells during infection






37. The independant evolution of similar traits - starting from a similar ancestral condition






38. Separates DNA by size






39. A DNA double helix is held together in the center by between nitrogenous bases






40. The final product of transcription is...






41. The movement of individuals into an area






42. Independent segregation of genes during the formation of gametes






43. A codon is made of...






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






45. A change or error in the DNA sequence






46. Visual expression of a trait






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






48. Trait evolves overtime; NO common ancestry






49. Which structure contains anticodons






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







Sorry!:) No result found.

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