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Multiple Choice

1. At the chromosomal level, what is the difference between human males and human females? (1 point)
All males have a Y chromosome, and females do not.
All males have an X chromosome, and females do not.
All males have 47 chromosomes, and females only have 46.
All males have 46 chromosomes, and females have 47.
2. A color-blind woman marries a man who is not color-blind. All of their sons are color-blind, but none of their daughters are color-blind. Color-blindness is likely (1 point)
the result of having too few chromosomes.
the result of having an extra chromosome.
a sex-linked trait.
a recessive trait.
3. A woman who is a carrier for hemophilia marries a man who does not have the disease. If the couple has a daughter, what are the chances that their daughter would have hemophilia? (Hint: Use a Punnett square to determine the answer.) (1 point)
0 percent
25 percent
50 percent
75 percent
4. A pedigree that indicates who has cystic fibrosis in a family and identifies some members who are carriers. At the top of the pedigree, there are two sets of parents, labeled A and B (carriers) and C and D (do not have the disease). One daughter of A and B, labeled E, does not have the disease and is not a carrier. One daughter, labeled F, has the disease, and the son, labeled G, is a carrier. The only child of C and D, a daughter labeled H, does not have the disease and is not a carrier. How the son of G and H, labeled I, is affected is not given.
The pedigree above shows the family history of the recessive blood disorder sickle-cell anemia. What are the chances of the child I having the disease or carrying the gene for the disease? (1 point)
Child I has no chance of having the disease and no chance of carrying the disease.
Child I has a 50 percent chance of having the disease and a 50 percent chance of carrying the disease.
Child I has no chance of having the disease and a 50 percent chance of carrying the disease.
Child I has a 100 percent chance of having the disease and a 100 percent chance of carrying the disease.
5. Down syndrome is (1 point)
a sex-linked trait.
a recessive trait.
the result of having too few chromosomes.
the result of having an extra chromosome.

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65 answers

  1. The correct answers are
    1.A
    2.C
    3.A
    4.C
    5.D

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  2. These answers are 100% right i took the quiz and got 5/5 these are for the people who go to connections academy.

    1.A
    2.C
    3.A
    4.C
    5.D

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  3. 5/5
    A
    C
    A
    C
    D
    connections academy

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  4. I got to connexous

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  5. Josslyn and Klynn are right i thought they were wrong but they are right

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  6. A
    C
    A
    C
    D

    5 out of 5 100%

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  7. 100% right!!!! thx everyone:D

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  8. thanks josslyn is right!!!!!!!!!!!!!

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  9. josslyn is right thx 5/5 100%

    1.A
    2.C
    3.A
    4.C
    5.D

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  10. A,C,A,C,D...Perfect answers...BOOOOOM. Your Welcome lol

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  11. ACACD

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  12. Hey I go to connexus academy

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  13. Me to and the answers are still right!!!

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  14. I go to connections academy. i got 5 out of 5 100 percent thanks

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  15. Thank you jiskha I got a 5/5

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  16. i go to connections

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  17. thx, I got a 100% the answers are a,c,a,c,d

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  18. i go to connexus

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  19. A, C, A, C, D. Nothing else to it, and I can't think of a rhyme to this, so I blew it.

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  20. Megan's answers are totally incorrect. Everyone else is 100% correct.

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