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






2. Is the evolutionary process whereby a population becomes better suited to its habitat






3. Even if the gametes of the two species meet - fertilization does not occur






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






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






6. The final product of transcription is...






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






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






9. DNA that is coiled around proteins






10. Determined the complete double helical structure of DNA






11. Similar embryological structures in different species - such as gill slits - may demonstrate that these species share a common ancestor.






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






13. Trait evolves overtime; NO common ancestry






14. During transcription an RNA molecule is formed






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






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






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






18. Breeding organisms with specific traits in order to produce offspring with identical traits






19. How often a form of a gene appears in a gene pool






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






21. Periods of rapid evolution punctuated by periods of little change






22. A codon is made of...






23. T or F a codon consist of three nucleotides






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






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






26. A limb with five digits (fingers)






27. A trait that masks the expression of another trait






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






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






30. Pea plants






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






32. Change to a chromosome in which part of the chromosome is repeated






33. Different alleles for a gene






34. 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






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






36. The preserved remains or traces of an organism that lived in the past






37. The complete genetic material contained in an individual






38. Genes contain instructions for assembling






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






40. Change to a chromosome in which a fragment of the chromosome is removed






41. A combining of genes or characters different from what they were in the parents






42. What is one benefit for having two strands of DNA?






43. A change or error in the DNA sequence






44. Is active during transcription






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






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






47. Situation in which allele frequencies remain constant






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






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






50. Independent segregation of genes during the formation of gametes