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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. 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






2. 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






3. It means chromosomes are paired. One of each chromosome in a pair originates from the father and one from the mother. They affect the same trait - but don't necessarily cause the same expression of the trait.






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






5. Dna moves during electrophoresis because of...






6. Selection against one end of a range of variation - resulting in a progressive change in allele frequency






7. Different alleles for a gene






8. Building block of a nucleic acid (DNA and RNA)






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






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






11. Evolution of living things - based on evidence from the past and present.






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






13. Recognize and cut DNA at specific sequences usually palindromes






14. A distinct population of a species that varies from other populations of the same species.






15. The enzyme that binds to the promoter region of a gene during transcription is called...






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






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






18. Types of rocks formed after exposure to very high heat. Because of the high temperatures - fossils are not able to be recovered from these types of rocks. Absolute or radioactive dating is possible - however.






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






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






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






22. Process in which DNA is duplicated






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






24. Molecules that join together to form DNA and RNA. Monomers that make up a nucleic acid






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






26. The number of times an allele appears in a population






27. Visual expression of a trait






28. A codon is made of...






29. Mating of 2 oism that differ in 2 characters






30. The offspring of a cross between two inbred lines within a single species. May also refer to the offspring of across between two species






31. When chromosome is changed by radiation and chemicals - results a permanent structural change in the chromosome - which will no longer be able to pair with its homologous pair. Eg - deletion - duplication - inversion and translocation.






32. During transcription an RNA molecule is formed






33. Individual that is heterozygous for two traits; shows the phenotype governed by the dominant alleles but carries the recessive alleles






34. How often a particular gene occurs in the population






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






36. Organ that serves no useful function in an organism






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






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






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






40. Form of reproductive isolation in which tere are differences in species courtship behavior






41. Uses metamorphic or igneous rock - calculates the age of an object by assessing the amount of radioactive element still present in the organism. Radioactive elements are slowly lost over time because of decay.






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






43. An organism that has characteristics resulting from chromosomal alteration. This is a result of crossing over of the chromosomes during Meiosis - mutations and random segregation.






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






45. Mutation where an extra base is added






46. Any agent that can cause a change in DNA






47. Which type of Rna functions as a blue print of the genetic code






48. Change to a chromosome in which a fragment of one chromosome attaches to a nonhomologous chromosome






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






50. Cross where you cross unknown genotype with a recessive







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