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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. Three dimensional shape of organism made from a mold. May be created with plaster or over time with minerals.






2. Found only in that country






3. A codon is made of...






4. The backbone of DNA consist of...






5. Selection for the ability to obtain a mate






6. 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






7. A process that results in an allele having a different probability of remaining in the gene pool compared with that of another allele






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






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






10. Separates DNA by size






11. Shows how the embryos of different groups resemble each other at particular stages. Similarities indicate groups may share a common ancestor






12. Copying the code from DNA onto mRNA






13. Is a sequence of DNA that codes for a protein and thus determines a trait. This is because the sequence of bases code for certain proteins.






14. 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.






15. Is any chromosome that is not a sex chromosome.






16. Cross where you cross unknown genotype with a recessive






17. A trait that masks the expression of another trait






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. Two alternative forms of a gene e.g Tall vs Short






20. Earth's history organized into four eras: Precambrian - Paleozoic - Mesozoic - and Cenozoic






21. The gradual changes in gene frequencies in a population due to random events






22. Any indirect evidence of life preserved as an impression in rock; trails - footprints - tracks - burrows - and bite marks






23. Method of replication that implies that each new strand of DNA is half original and half new






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






25. To create a recombinant DNA molecule - one would have to first cut two DNAs with creating before pasting them together






26. A body cell






27. Translation occurs in the...






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






29. Situation in which allele frequencies remain constant






30. Building block of a protein






31. Predicts the possible outcome of a genetic cross.






32. Which structure contains anticodons






33. Determined the concept of complementary base pairing






34. The specific location of a gene on a chromosome






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






36. These prevent fertilization between species e.g. diff breeding season - mating behaviour






37. Evolution of the earth - which is hypothesized to have been formed over 4.6 billion years ago.






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






39. A type of natural selection in which genetic diversity decreases as the population stabilises on a particular trait value






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






41. Transcrition occurs in the...






42. 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.






43. Change in a DNA sequence that affects genetic information






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






45. What does DNA stand for...






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






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






48. 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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49. Populations that can interbreed with neighboring populations but not with populations separated by larger geographical distances






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







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