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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. Are noncoding sequences in the gene that are removed from RNA after transcription






2. The specific location of a gene on a chromosome






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






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






5. A type of barrier between species; the species remain isolated because male and femal gametes of the different species cannot fuse - or they die before they unite.






6. It is the time from when the Earth formed and simple life - forms evolved (and it is the longest era)






7. Building block of a protein






8. Change in a DNA sequence that affects genetic information






9. 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






10. Copying the code from DNA onto mRNA






11. Visual expression of a trait






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






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






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






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






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






17. Type of sympatric speciation that occurs when a new species is formed because of a change in microhabitats






18. Recognize and cut DNA at specific sequences usually palindromes






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






20. Is active during transcription






21. An evolutionary 'branch' and its daughter 'twigs'






22. Hybrid is sterile so biologically unfit






23. Uses metamorphic or igneous rock - calculates the age of an object by assessing the amount of radioactive element still present in the organism. Radioactive elements are slowly lost over time because of decay.






24. 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.






25. The enzyme that binds to the promoter region of a gene during transcription is called...






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






27. Organ no longer serves a function






28. 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.






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






30. To create a recombinant DNA molecule - one would have to first cut two DNAs with creating before pasting them together






31. Term used to refer to an organism that has two different alleles for the same trait. e.g Tt is the heterozygous genotype for Tall.






32. One of the identical rods of a chromosome.






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






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






35. A change or error in the DNA sequence






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. When competition causes two closely related species to become more different in regions where their ranges overlap






38. Is found in DNA






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






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






41. Periods of little adaptive change






42. 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






43. Trait evolves overtime; NO common ancestry






44. Is any chromosome that is not a sex chromosome.






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






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






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






48. The study of the past and present distribution of species.






49. 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.






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






Can you answer 50 questions in 15 minutes?



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