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






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






3. A point of overlap of paired chromatids at which fusion and exchange of genetic material (crossing over) occurs during prophase I of meiosis.






4. Trait evolves overtime; NO common ancestry






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






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






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






8. The backbone of DNA consist of...






9. 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






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






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






12. Determined the concept of complementary base pairing






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






14. Transfer RNA; type of RNA that carries amino acids to the ribosome






15. Pea plants






16. A change or error in the DNA sequence






17. Process by which individuals that are better suited to their environment survive and reproduce most successfully; also called survival of the fittest






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






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






20. Cross where you cross unknown genotype with a recessive






21. Gene


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






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






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






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






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






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






28. The complete genetic material contained in an individual






29. A genetic crosses that involve one trait. e.g TT plant crossed with tt plant has offspring who are heterozygous Tt.






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






31. 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.






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






33. DNA is made of...






34. The inherited characteristic often masked by the dominant characteristic and not seen in an organism. e.g. Tt plant will still be tall. Where T is the dominant trait for tall and t is the recessive trait for small.






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






36. 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






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






38. 2 alleles for a character separate during the formation of gametes - so that each gamete only carriers one allele for each character


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






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






41. Organ that serves no useful function in an organism






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






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






44. Building block of a protein






45. Closely related species occupying different habitats - niches preventing them from interbreeding






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






47. Trait where heterozygous is a blending of two alleles






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






49. The structure on a tRNA molecule that allows it interact with an mRNA molecule






50. Dna moves during electrophoresis because of...