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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. Another name for a gene






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






3. Dna moves during electrophoresis because of...






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






5. DNA is made of...






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. A DNA double helix is held together in the center by between nitrogenous bases






8. It means chromosomes are paired. One of each chromosome in a pair originates from the father and one from the mother. They affect the same trait - but don't necessarily cause the same expression of the trait.






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






10. Is a sequence of DNA that codes for a protein and thus determines a trait. This is because the sequence of bases code for certain proteins.






11. The final product of transcription is...






12. Any agent that can cause a change in DNA






13. Periods of little adaptive change






14. Determined the concept of complementary base pairing






15. The offspring of a cross between two inbred lines within a single species. May also refer to the offspring of across between two species






16. Translation occurs in the...






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






18. What does DNA stand for...






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






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






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






22. Nucleotides that control which amino acids are added during protein synthesis






23. Evolutionary process in which a species or related species folllow different evolutionary paths to eventually become less related






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






25. Type of rock made from small pieces of other rocks and organisms pressed together. Source of fossil preservation. Limited radioactive or absolute dating potential.






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






27. Hybrid is sterile so biologically unfit






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






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






30. An episode of large - scale extinction affecting many different groups of organisms within a short period of time






31. Describes the isolation of a physical barrier e.g. body of water (ocean) or mountains






32. 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






33. 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.






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






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






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






37. Ribosomes are made of...






38. Is found in DNA






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






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






41. Gene

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42. Situation in which allele frequencies remain constant






43. Organism is preserved at very low temperatures. Preservation of both hard and soft parts can occur.






44. Mating of 2 oism that differ in 2 characters






45. Cell division that produces reproductive cells or gamates.This occurs in the gonads (testicle and ovaries in animals) Here the chromosome number is halved the original amount. (each new cell has a haploid number = n) All daughter cells are not geneti






46. Transcrition occurs in the...






47. Chromosomes are collections of many






48. Innate trait; shared ancestry






49. Proteins are made of...






50. Building block of a protein