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Seventh Grade (Grade 7) DNA, RNA, and Genetics Questions

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Grade 7 :: DNA, RNA, and Genetics by rosalatorre
People with an extra copy of chromosome 21 have a disorder called
  1. Down syndrome.
  2. colorblindness.
  3. hemophilia.
  4. sickle-cell disease.
Grade 7 :: DNA, RNA, and Genetics by rosalatorre
An abnormal condition that a person inherits through genes or chromosomes is a
  1. pedigree.
  2. gene therapy.
  3. genetic disorder.
  4. karyotype.
Grade 7 :: DNA, RNA, and Genetics by rosalatorre
In a pedigree, a square is used to represent a
  1. female.
  2. male.
  3. carrier.
  4. clone.
Grade 7 :: DNA, RNA, and Genetics by rosalatorre
Grade 7 :: DNA, RNA, and Genetics by rosalatorre
An example of a human trait that is controlled by more than one gene is
  1. blood type.
  2. widow's peak.
  3. skin color.
  4. dimples.
Grade 7 :: DNA, RNA, and Genetics by rosalatorre
The transfer of genes from one organism to another is called
  1. hybridization.
  2. cloning.
  3. selective breeding.
  4. genetic engineering.
Grade 7 :: DNA, RNA, and Genetics by rosalatorre
The crossing of two individuals that have similar characteristics is referred to as
  1. genetic engineering.
  2. hybridization.
  3. inbreeding.
  4. cloning.
Grade 7 :: DNA, RNA, and Genetics by rosalatorre
A genetic disorder in which a person's blood clots very slowly if at all is
  1. sickle-cell disease.
  2. cystic fibrosis.
  3. Down syndrome.
  4. hemophilia.
Grade 7 :: DNA, RNA, and Genetics by JeffreyLockett
Sexual reproduction results in
  1. more diverse offspring
  2. more uniform offspring
  3. both a and b
  4. none of the above
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