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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. Consists of all genes - including all the different alleles - that are present in a population






2. 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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3. Another term for pure breeding






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






5. Visual expression of a trait






6. Layers of compressed sedimentary rock demonstrate the order or sequence at which events occurred. Cannot delineate the exact point of time - but is able to distinguish the order of events.






7. Identical alleles for a gene






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






9. Different alleles for a gene






10. Is active during transcription






11. What does DNA stand for...






12. Predicts the possible outcome of a genetic cross.






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






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






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






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






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






18. The region of the chromosome that holds the two sister chromatids together during mitosis






19. 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.






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






21. You mate the unknown genotype with an organism showing the recessive trait. If any of the offspring show the recessive trait - the original unknown parent was heterozygous. If no recessive trats show up - the original parent was homozygous.






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






23. DNA is made of...






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






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






26. Organ that serves no useful function in an organism






27. A change in the base sequence of a gene






28. Determined the concept of complementary base pairing






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






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






31. The signal on a mRNA molecule that designates the end of the coding sequence is called the...






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






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






34. Large - scale evolutionary changes that take place over long periods of time






35. Describes a cell - nucleus - or organism that has only one set of unpaired chromosomes






36. An equilibrium in the occurence of two or more different froms within the same population usually caused by different allele combiinations of a gene






37. A DNA strand that has the bases CTAATGT forms a complete complementary double helix with






38. A body cell






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






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






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






42. 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






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






44. Chromosomes are collections of many






45. Transcrition occurs in the...






46. A trait that masks the expression of another trait






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






48. When chromosome is changed by radiation and chemicals - results a permanent structural change in the chromosome - which will no longer be able to pair with its homologous pair. Eg - deletion - duplication - inversion and translocation.






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






50. How often a particular gene occurs in the population