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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. Features that are superficially similar but have different modes of development






2. Evolution of living things - based on evidence from the past and present.






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






4. The movement of individuals into an area






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






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






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






8. Impression made from a organism in soft material such as sand or mud.






9. A change or error in the DNA sequence






10. Situation in which allele frequencies remain constant






11. 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






12. Actual remains of an organism such as bones - teeth - shells - etc.






13. The individuals choice of which mate they will choose. The choice is dependant on what traits the individual finds attractive. e.g some people will want their mates to be smart or pretty.






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






15. Periods of rapid evolution punctuated by periods of little change






16. Organisms with similar functions - but different underlying structure. Example: bird and insect wing. These structures do NOT show a common ancestral link.






17. Movement of organisms ro of from a population






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






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






20. The specific location of a gene on a chromosome






21. A codon is made of...






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






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






24. 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






25. DNA is made of...






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






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






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






29. Trait where heterozygous is a blending of two alleles






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






31. Because of base pairing in DNA the amount of






32. Separates DNA by size






33. Dna moves during electrophoresis because of...






34. The comparison of the structures of different organisms






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






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






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






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






39. Another name for a gene






40. Change to a chromosome in which part of the chromosome is repeated






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






42. Recognize and cut DNA at specific sequences usually palindromes






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






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






45. Process by which one species gives rise to two or more species






46. Cell division in which the nucleus divides into nuclei containing the same number of chromosomes. Mitosis involves growth and repair and occurs in the body cells.






47. Form of reproductive isolation in which two populations reproduce at different times






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






49. The complete genetic material contained in an individual






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