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






2. 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.






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






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






5. Is active during transcription






6. 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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7. A process where the organisms that have traits that aid in its survival (adaptive traits) will reproduce to pass that trait to futher generations thus increasing the frequency of that trait in the population. Vice versa traits that reduce the chance






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






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






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






11. Embryos of similar organisms have very similar early development indicating similar DNA at work






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






13. Populations that can interbreed with neighboring populations but not with populations separated by larger geographical distances






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






15. Movement of organisms ro of from a population






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






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






18. Chromosomes that determine the sex of an individual. These are X for female and Y for male. The female egg is an X while the male sperm can be X or Y






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






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






21. 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






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






23. A nucleotide of RNA is made of...






24. 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






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






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






27. A population partially isolated from other populations of the same species






28. Identical alleles for a gene






29. Process in which DNA is duplicated






30. Genes contain instructions for assembling






31. Dna moves during electrophoresis because of...






32. Selection acting against the middle of a range of variation






33. Group of similar organisms that can breed and produce fertile offspring






34. Innate trait; shared ancestry






35. Human - like species that existed millions of years ago as witnessed through fossil evidence.






36. 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.






37. Chromosomes are collections of many






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






39. Hybrid is sterile so biologically unfit






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






41. Cross where you cross unknown genotype with a recessive






42. Group of individuals of the same species that live in the same area






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






44. Three mRNA nucleotides that code for a specific amino acid






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






46. Copying the code from DNA onto mRNA






47. 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.






48. Organ no longer serves a function






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






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