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






2. Because of base pairing in DNA the amount of






3. A fossil known to have lived in a particular geologic age that can be used to date the rock layer in which it is found






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






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






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






7. All the genes in a population. genes are added by reproduction and immigration and lost by death and emigration






8. Closely related species occupying different habitats - niches preventing them from interbreeding






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






10. Organ that serves no useful function in an organism






11. Cell division that produces reproductive cells or gamates.This occurs in the gonads (testicle and ovaries in animals) Here the chromosome number is halved the original amount. (each new cell has a haploid number = n) All daughter cells are not geneti






12. 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






13. You mate the unknown genotype with an organism showing the recessive trait. If any of the offspring show the recessive trait - the original unknown parent was heterozygous. If no recessive trats show up - the original parent was homozygous.






14. Evolution of superficial phenotypic similarity of form as a result of similar selection pressures






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






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






17. The final product of transcription is...






18. Organisms with similar functions - but different underlying structure. Example: bird and insect wing. These structures do NOT show a common ancestral link.






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






20. Trait evolves overtime; NO common ancestry






21. The complete genetic material contained in an individual






22. The movement of individuals into an area






23. Innate trait; shared ancestry






24. A change or error in the DNA sequence






25. Dna moves during electrophoresis because of...






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






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






28. An episode of large - scale extinction affecting many different groups of organisms within a short period of time






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






30. Predicts the possible outcome of a genetic cross.






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






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






33. 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






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






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






36. Organisms with a similar underlying structure - but different function. Example: bird - bat and dolphin 'arm'. Shows a common ancestral link.






37. The evolutionary process by which a species becomes better suited to its niche.






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






39. Process by which a ribosome uses the code on mRNA to make proteins






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






41. Gene

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






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






44. Determined the concept of complementary base pairing






45. Natural selection that causes the frequency of a particular allele to move in one direction






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






47. 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.






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






49. 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.






50. Genes contain instructions for assembling