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

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Grade 7 DNA, RNA, and Genetics
The twisted shape of DNA is a                .
  1. double ladder
  2. double helix
  3. nucleotide
  4. base pair
Grade 7 DNA, RNA, and Genetics
The letters "DNA" stand for                      .
  1. deoxyribonucleic acid
  2. ribonucleic acid
  3. deoxyribose sugar
  4. ribose sugar
Grade 7 DNA, RNA, and Genetics
DNA makes up our
  1. biosphere.
  2. organisms.
  3. cells.
  4. genes.
Grade 7 DNA, RNA, and Genetics
Freckles, eye color, and hair color are all physical traits.
  1. True
  2. False
Grade 7 DNA, RNA, and Genetics
Attached earlobes are a characteristic seen when a person inherits a recessive allele, e, for this trait from each parent. Which of the following statements is correct?
  1. The genotype ee determines the phenotype.
  2. The phenotype ee determines the genotype.
  3. The genotype ee is an acquired trait.
  4. The phenotype ee is an acquired trait.
Grade 7 DNA, RNA, and Genetics
How many chromosomes does a human body cell have?
  1. 23
  2. 2
  3. 46
  4. 16
Grade 7 DNA, RNA, and Genetics
What an organism looks like, or its other detectable characteristics, is its
  1. genetic variable.
  2. genotype.
  3. phenotype.
  4. allele.
Grade 7 DNA, RNA, and Genetics
The sugar in DNA is
  1. deoxyribose.
  2. ribose.
  3. sucrose.
  4. glucose.
Grade 7 DNA, RNA, and Genetics
What is the study of heredity?
  1. ecology
  2. genetics
  3. chromosomes
  4. cosmetology
Grade 7 DNA, RNA, and Genetics
A molecule that contains genetic information and is present in all living cells is
  1. pedigree.
  2. DNA.
  3. nucleus.
  4. heredity.
Grade 7 DNA, RNA, and Genetics
                are segments of DNA that carry instructions for who you are.
  1. Chromosomes
  2. Chromatids
  3. Genes
  4. Proteins
Grade 7 DNA, RNA, and Genetics
                is the passing of traits from parent to offspring.
  1. DNA
  2. Reproduction
  3. Evolution
  4. Heredity
Grade 7 DNA, RNA, and Genetics
When cells have paired chromosomes, they are
  1. haploid.
  2. diploid.
  3. singular.
  4. plural.
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