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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 movement of genes between populations as a result of mating of migration






2. Cell division in which the nucleus divides into nuclei containing the same number of chromosomes. Mitosis involves growth and repair and occurs in the body cells.






3. Predicts the possible outcome of a genetic cross.






4. Recognize and cut DNA at specific sequences usually palindromes






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






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






7. Visual expression of a trait






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






9. shape of a DNA molecule formed when two twisted DNA strands are coiled into a springlike structure and held together by hydrogen bonds between the bases.






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






11. Gene

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






13. 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.






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






15. The specific location of a gene on a chromosome






16. A change in the base sequence of a gene






17. Pea plants






18. A nucleotide of RNA is made of...






19. A small simple structure (as a fertilized egg) from which new tissue can develop into a complete organism. It is also a cell






20. Chromosomes are collections of many






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






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






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






24. What happens during the process of translation






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






26. Term used to refer to an organism that has two identical alleles for a particular trait. e.g TT is the homozygous genotype for Tall.






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






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






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






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






31. Cross where you cross unknown genotype with a recessive






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






33. Another term for pure breeding






34. Selection for the ability to obtain a mate






35. Independent segregation of genes during the formation of gametes






36. How often a particular gene occurs in the population






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






38. Selection acting against the middle of a range of variation






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






40. 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.






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






42. A group of organisms whose members are sufficiently alike to be able to reproduce and produce fertile offspring and who are unable to reproduce with other such groups






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






44. Process in which DNA is duplicated






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






46. Ribosomes are made of...






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






48. Change of an organism over time. This can be caused by changes in in habitat or need to adapt for survival.






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






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







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