Human Genetics Clicker Review - PowerPoint Presentation

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Human Genetics Clicker Review

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1. What are somatic cells?

Body cells with 23 chromosomesSex Cells with 46 chromosomesBody cells with 46 chromosomes Sex cells with 23 chromosomes

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[MC Any]

[MC All]

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2. This is a Dominant pedigree. What is the Genotype of individual II-2

RRrrRrR?

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3. What’s the disorder?

Turner KlinefelterDown syndromeNothing

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4. What sex chromosome(s) do(es) sperm cells contain?

XYX or YX and Y

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[MC Any]

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5. What’s the disorder?

Down syndromeTrisomy 21Trisomy 15Nothing

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6. What are autosomes and how may do we have?

Regular chromosomes and we have 23 pairsSex chromosomes and we have 2Sex chromosomes and we have 22 pairsRegular chromosomes and we have 22 pairsRegular chromosomes and we have 2

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[MC Any]

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7. This is a recessive pedigree. What is the Genotype of individual I-2

RRrrRrR?

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8. What is Nondisjunction

When the chromosomes fail to separate during anaphase of meiosis

When the chromosomes fail to separate during anaphase of mitosis

When the chromosomes separate during anaphase of meiosis

When the chromosomes separate during anaphase of mitosis

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9. This is a recessive pedigree. What is the Genotype of individual III-2

RRrrRrR?

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10. What is this picture called?

pedigreenondisjunctionautosomekaryotype

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11. What two things can this picture tell you?

The sex of the baby and any sex-linked disorderThe sex of the baby and the presence of any number disorderIf it has an autosomal disorder or a numbers disorderIf the baby has any sex-linked disorders or autosomal disorders

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12. If one of your parents is blood type A and the other is type B, which of the following blood types would you likely be?

A

B

O

AB

All of the above

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13. What is this called?

pedigreenondisjunctionautosomekaryotype

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14. This is a Dominant pedigree. What is the Genotype of individual III-5

RRrrRrR?

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15. A mother of known blood type A has a child whose blood turns out to be B. From this it follows that the mother

Must really have the blood type AB

Is heterozygous for the trait

Is homozygous for the trait

Could have several possible genotypes

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16. This is a recessive pedigree. What is the Genotype of individual II-2

RRrrRrR?

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17. Which disorder is characterized by symptoms that don’t show until 30’s & 40’s, it is the deterioration of nervous system?

HemophiliaHuntington’s Duchene’s Muscular DystrophyCystic Fibrosis

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18. If a lady who is a carrier for Duchenne’s marries a man who does not have it, what are possible the genotypes of their offspring?

DD or DdXDY XdYXDXDXDXdAll except A

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19. What are the chances of having a child with Achondroplasia when you cross a dad who is heterozygous with a mom who doesn’t have it?

0%25%50%100%

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20. Which of the following is Not Sex-linked?

Color BlindnessHuntingtonsDuchenne’s MDHemophilia

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21. This pedigree is for hemophiliaWhat is the genotype of # 15

HHhhXHYXhYXHX?

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22. This pedigree is for hemophiliaWhat is the genotype of # 6

HHhhXHYXhYXHX?

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23. Which disorder is characterized by excess mucus production in the lungs and the digestive system?

HemophiliaHuntington’s Duchene’s Muscular DystrophyCystic Fibrosis

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[MC Any]

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24. What are the chances of having a child with cystic fibrosis when you cross a dad who is heterozygous with a mom who is homozygous dominant?

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[MC Any]

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25. This pedigree is for hemophiliaWhat is the genotype of # 5

HHhhXHYXhYXHX?

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26. If dad is color blind and mom is a carrier, what is the probability that they will have a color blind daughter?

0%25%50%100%

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Answers

C

D

A

C

C

D

B

A

D

D

B

E

A

C

B

C

B

F

C

B

D

E

D

A

C

C