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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. Organ that serves no useful function in an organism






2. Is active during transcription






3. The movement of genes between populations as a result of mating of migration






4. Reciprocal evolution in two species as a result of the selection pressure each imposes upon the other






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






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






7. T or F a codon consist of three nucleotides






8. A change or error in the DNA sequence






9. Process in which DNA is duplicated






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






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






12. 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.






13. During transcription an RNA molecule is formed






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






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






16. The banding pattern of a persons DNA after being cut and run on gel is called






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






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






19. A process where the organisms that have traits that aid in its survival (adaptive traits) will reproduce to pass that trait to futher generations thus increasing the frequency of that trait in the population. Vice versa traits that reduce the chance






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






21. Recognize and cut DNA at specific sequences usually palindromes






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






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






24. Which structure contains anticodons






25. 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






26. Evolutionary process in which a species or related species folllow different evolutionary paths to eventually become less related






27. Cross where you cross unknown genotype with a recessive






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






29. 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.






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






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






32. Of a cell or organism having two sets of homologous chromosomes or twice the haploid number






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






34. The environmental factors that favour certain phenotypes






35. An ancestor that two or more descendants have in common






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






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






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






39. Change in allele frequencies as a result of the migration of a small subgroup of a population






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






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






42. Different alleles for a gene






43. Messenger RNA; type of RNA that carries instructions from DNA in the nucleus to the ribosome






44. An equilibrium in the occurence of two or more different froms within the same population usually caused by different allele combiinations of a gene






45. Independent segregation of genes during the formation of gametes






46. Process by which one species gives rise to two or more species






47. When competition causes two closely related species to become more different in regions where their ranges overlap






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






49. The specific location of a gene on a chromosome






50. Innate trait; shared ancestry