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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. Recognize and cut DNA at specific sequences usually palindromes






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






3. Which type of Rna functions as a blue print of the genetic code






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






5. 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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6. Organ that serves no useful function in an organism






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






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






9. Natural disaster eliminates most of the population - members left contribute the alleles for the new population.






10. A nucleotide of RNA is made of...






11. Mutation where an extra base is added






12. Hybrid is sterile so biologically unfit






13. One of the identical rods of a chromosome.






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






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






16. An ancestor that two or more descendants have in common






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






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






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






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






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






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






23. 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






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






25. The molecules responsible for bringing amino acids to the ribosome during protein synthesis are






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






27. Describes the existence of a prezygotic reproductive barrier between two species as a result of them occupying or breeding in different habitats within the same general geographical area






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






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






30. Chromosomes are collections of many






31. How often a form of a gene appears in a gene pool






32. Selection acting against the extremes of a range of variation - resulting in resistance to change in allele frequencies






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






34. Process in which DNA is duplicated






35. A change or error in the DNA sequence






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






37. Is a base found in DNA and RNA. Cytosine pairs with Guanine in DNA






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






39. 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.






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






41. Structures in different but related species that are derived from the same ancestral structure but now serve different purposes.






42. 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.






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






44. process in which homologous chromosomes exchange portions of their chromatids during meiosis.






45. A mutation in which one nucleotide is replaced by another nucleotide






46. Is the evolutionary process whereby a population becomes better suited to its habitat






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






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






49. One of the types of fossils made from hardened tree resin. Preserves both hard and soft parts.






50. All the factors in an organism's surroundings that can potentially affect it