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






2. Impression made from a organism in soft material such as sand or mud.






3. 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.






4. Mutation where an extra base is added






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






6. 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.






7. Pea plants






8. 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.






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






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






11. When F1 is fully fertile but F2 has low fertility (rice - cotton)






12. Form of reproductive isolation in which structural differences in the anatomy of reproductive organs prevent sperm transfer between individuals of different species






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






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






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






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






17. Predicts the possible outcome of a genetic cross.






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






19. The type of environment in which an organism or group normally lives or occurs






20. Situation in which allele frequencies remain constant






21. What does DNA stand for...






22. Selection acting against the extremes of a range of variation - resulting in resistance to change in allele frequencies






23. The specific location of a gene on a chromosome






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






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






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






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






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






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






30. Organ no longer serves a function






31. A body cell






32. Chromosomes that determine the sex of an individual. These are X for female and Y for male. The female egg is an X while the male sperm can be X or Y






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






34. Chromosomes are collections of many






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






36. Any agent that can cause a change in DNA






37. It is the time from when the Earth formed and simple life - forms evolved (and it is the longest era)






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






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






40. Another term for pure breeding






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






42. Used radioactive sulfur and radioactive phosphorus to determine that DNA is the genetic material - by demonstrating that it is DNA that is injected by bacteriophages into bacterial cells during infection






43. Proteins are made of...






44. The formation of new species as a result of evolution






45. A change in the base sequence of a gene






46. Is a base found in DNA and RNA. In DNA its partner is Thymine. In RNA its partner is Uracil






47. Innate trait; shared ancestry






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






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






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






Can you answer 50 questions in 15 minutes?



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