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






2. Found only in that country






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






4. Building block of a nucleic acid (DNA and RNA)






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






6. Dna moves during electrophoresis because of...






7. Movement of alleles into or out of a population due to the migration of individuals to or from the population






8. Determined the concept of complementary base pairing






9. A body cell






10. Gradual evolution within a lineage






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






12. When zygote does not complete development or is physically weaker than normal






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






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






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






16. 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.






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






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






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






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






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






22. Organ no longer serves a function






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






24. Earth's history organized into four eras: Precambrian - Paleozoic - Mesozoic - and Cenozoic






25. 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.






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






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






28. 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.






29. Hybrid is sterile so biologically unfit






30. Change of an organism over time. This can be caused by changes in in habitat or need to adapt for survival.






31. Proteins are made of...






32. T or F If a nucleic acid contain uracil it is DNA






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






34. A taxon originating from and including a single common ancestor






35. 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.






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






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






38. Transcrition occurs in the...






39. Is a trait that is more expressed than another trait. Is written in capital letters for Genotype. E.g Tall genotype is TT or Tt where T is the allele for tall trait and t is the trait for small. T will be expressed more.






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






41. Evolution of the earth - which is hypothesized to have been formed over 4.6 billion years ago.






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






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






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






45. How many codons are needed to specify three amino acids






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






47. Process by which a ribosome uses the code on mRNA to make proteins






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






49. A trait that masks the expression of another trait






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






Can you answer 50 questions in 15 minutes?



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