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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. Nucleotides that control which amino acids are added during protein synthesis






2. DNA that is coiled around proteins






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






4. Gene

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5. Visual expression of a trait






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






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






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






10. Proteins are made of...






11. A limb with five digits (fingers)






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






13. The structure on a tRNA molecule that allows it interact with an mRNA molecule






14. Large - scale evolutionary changes that take place over long periods of time






15. Mutation where an extra base is added






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






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






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






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






20. Chromosomes are collections of many






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






22. Determined the concept of complementary base pairing






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






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






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






26. One of the types of fossils made from hardened tree resin. Preserves both hard and soft parts.






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






28. The sum total of an organism's requirements; its way of life






29. Building block of a protein






30. 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






31. A mutation in which one nucleotide is replaced by another nucleotide






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






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






34. Genes contain instructions for assembling






35. Consists of all genes - including all the different alleles - that are present in a population






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






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






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






39. What does DNA stand for...






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






41. Evolution resulting from small specific genetic changes that can lead to a new subspecies






42. A change in the base sequence of a gene






43. Different alleles for a gene






44. 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.






45. How many codons are needed to specify three amino acids






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






47. 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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48. T or F A cloned organism has the same proteins as another organism






49. Trait evolves overtime; NO common ancestry






50. Type of rock made from small pieces of other rocks and organisms pressed together. Source of fossil preservation. Limited radioactive or absolute dating potential.