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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. Cross where you cross unknown genotype with a recessive






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






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






4. Group of similar organisms that can breed and produce fertile offspring






5. One of the identical rods of a chromosome.






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






7. Synonym for protein; chain of amino acids






8. Evolutionary process in which a species or related species folllow different evolutionary paths to eventually become less related






9. Transcrition occurs in the...






10. 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.






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






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






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






14. Messenger RNA; type of RNA that carries instructions from DNA in the nucleus to the ribosome






15. The comparison of the structures of different organisms






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






17. Building block of a protein






18. 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.






19. DNA is made of...






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






21. 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






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






23. Middle life (245-144 million years ago); rise of mammals and dinosaurs; the rise of birds; extinction of dinosaurs - rise of flowering plants






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






25. 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






26. The final product of transcription is...






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






28. Nucleotides that control which amino acids are added during protein synthesis






29. The condition in which there is no change in allele frequencies from generation to generation (i.e. no evolution)






30. 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






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






32. Proteins are made of...






33. The evolutionary history/geneology of a group of organisms (a tree thingy)






34. Science dealing with DNA and protein synthesis of living organisms. Manipulation of DNA.






35. Condition in which an organism has extra sets of chromosomes






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






37. process in which homologous chromosomes exchange portions of their chromatids during meiosis.






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






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






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






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






42. Form of reproductive isolation in which two populations reproduce at different times






43. Era of recent life that began about 66 million years ago and continues today; includes the first appearance Hominids






44. Structures in different but related species that are derived from the same ancestral structure but now serve different purposes.






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






46. Three mRNA nucleotides that code for a specific amino acid






47. 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.






48. Independent segregation of genes during the formation of gametes






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






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