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- 1. Multiple ChoiceHow many TOTAL chromosomes do humans have?2444623
- 2. Multiple Choice
This is a picture of chromosomes arranged in homologous pairs---what is it called?GenomePunnett SquareKaryotypeAutosomal cells - 3. Multiple ChoiceLooking at the karyotype, is this person male or female?There is no way to tell from a karyotype.MaleFemaleThis person has a genetic disorder
- 4. Multiple ChoiceA gene located on the sex chromosomeautosomesex-linkedgenetic disordersex gene
- 5. Multiple ChoiceThese cut DNA into smaller pieces.Restriction enzymesGel electrophoresisOzaki fragmentsScissors
- 6. Multiple ChoiceThis is a chart used to analyze the pattern of inheritance that shows the relationships in a family.pedigreegenotypegenomekaryotype
- 7. Multiple ChoiceThere are _______ autosomes in humans.2234644
- 8. Multiple ChoiceWhich of the following disorders can be observed in a human karyotypecolorblindnesstrisomy 21cystic fibrosissickle cell diease
- 9. Multiple ChoiceWhich of the following disorders is a direct result of nondisjunction?sickle cell diseaseTurner's syndromeHuntington's diseasecystic fibrosis
- 10. Multiple ChoiceThe technique used to separate DNA strands of different lengths is_______gel electrophoresisrestriction enzyme digestionshotgun sequencingbioinfomatics
- 11. Multiple ChoiceColorblindness is more common in males than in females becauseFathers pass the allele for colorblindness to their sons onlyThe allele for colorblindness is located on the Y chromosome.The allele for colorblindness is recessive and located on the X chromosome.Males who are colorblind have two copies of the allele for colorblindness.
- 12. Multiple ChoiceWhat is the probability that a human sperm cell will carry a X chromosome?50%100%25%0%
- 13. Multiple ChoiceGene located on the X or Y chromosomeHomozygous dominantnondisjunctionSex-linked geneAutosomal Disorder
- 14. Multiple ChoiceThe total chromosome number of a human male is often written as46, XX46, XY46, YY23, XY
- 15. Multiple ChoiceCystic fibrosis is caused bya small change in the DNA sequence of one genenondisjunction during meiosiscrossing-over between sex-chromosomesthe combined effects of many genes
- 16. Multiple ChoiceThe main goal of the Human Genome Project was toidentify the unique parts of each person's DNAidentify genes responsible for human diseasedetermine the entire sequence of human DNA.identify the structure of the DNA molecule
- 17. Multiple ChoiceThe specialized field of studying whole genomes, including genes and their functions, is calledgenomicsbioinformaticsthe Human Genome Projectinformation science
- 18. Multiple ChoiceWhich term(s) best describes the inheritance of human blood types?incomplete dominance and multiple allelescodominance and epistasiscodominance and multiple allelesincomplete dominance and codominance
- 19. Multiple ChoiceIf a woman is a carrier for a sex linked recessive trait of hemophilia and her husband has hemophilia, which of the following is true? Make a punnett square!All sons will have hemophiliaall daughters will have hemophilia50% of daughters and 50% of sons have hemophilia100% of sons have hemophilia and 100% of daughters are carriers
- 20. Multiple ChoiceThe genotype of the affected son and daughter at the bottom of this pedigree...homozygous dominanthomozygous recessiveheterozygousCan't tell
- 21. Multiple ChoiceWhich piece of DNA moves farthest in electrophoresis? A segment that is100 base pairs long100,00 base pairs5,000 base pairs2 base pair
- 22. Multiple ChoiceHow is Huntington's disorder inherited, and what would be a genotype for a female with it?X-linked dominant; XHXH or XHXhX-linked recessive; XhXhautosomal dominant; HH or Hhautosomal recessive hh
- 23. Multiple ChoiceCystic fibrosis is a genetic disorder caused by a ____________single base substitution in the gene for hemoglobindeletion of an amino acid from a chloride channel proteindefective gene found on the X chromosometrisomy of chromosome 21
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