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

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Grade 7 DNA, RNA, and Genetics
Grade 7 DNA, RNA, and Genetics
Grade 7 DNA, RNA, and Genetics
DNA is often described as a(n)
  1. extension ladder.
  2. wagon train.
  3. twisted ladder.
  4. chromosome tail.
Grade 7 DNA, RNA, and Genetics
Grade 7 DNA, RNA, and Genetics
What sort of variation is inherited?
  1. environmental variation
  2. behavioral variation
  3. genetic variation
  4. Variation is not inherited.
Grade 7 DNA, RNA, and Genetics
What are the different forms of a gene?
  1. gametes
  2. autosomes
  3. alleles
  4. hybrids
Grade 7 DNA, RNA, and Genetics
Sections of DNA that determine traits are
  1. sugar phosphates.
  2. centromeres.
  3. phases.
  4. genes.
Grade 7 DNA, RNA, and Genetics
What is a synonym for homozygous?
  1. heterozygous
  2. purebred
  3. hybrid
Grade 7 DNA, RNA, and Genetics
Grade 7 DNA, RNA, and Genetics
Grade 7 DNA, RNA, and Genetics
A certain type of pepper can be red or green. If the genotype of a green pepper shows two different alleles, then what is probably true of plant color?
  1. Green color is dominant.
  2. Red color is dominant.
  3. Red and green are co-dominant.
  4. Green peppers are a mutation.
Grade 7 DNA, RNA, and Genetics
Two identical alleles for a trait result in an organism that is
  1. homozygous.
  2. heterozygous.
  3. allele combinations.
  4. physical appearance.
Grade 7 DNA, RNA, and Genetics
Grade 7 DNA, RNA, and Genetics
Traits that appear more often than others are usually
  1. recessive.
  2. cohesive.
  3. dominant.
  4. obtrusive.
Grade 7 DNA, RNA, and Genetics
Grade 7 DNA, RNA, and Genetics
Grade 7 DNA, RNA, and Genetics
In a pedigree, what shape indicates males with the characteristic being studied?
  1. shaded circle
  2. unshaded circle
  3. shaded square
  4. unshaded square
Grade 7 DNA, RNA, and Genetics
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