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Eighth Grade (Grade 8) DNA, RNA, and Genetics Questions

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Grade 8 DNA, RNA, and Genetics
A recessive allele for a trait is expressed in the phenotype of an individual when it                                           .
  1. is paired with a dominant allele
  2. is paired with another recessive allele
  3. occurs in a heterozygous individual
  4. occurs in a homozygous dominant individual
Grade 8 DNA, RNA, and Genetics
Who is the "Father of Genetics"?
  1. Charles Darwin
  2. Loius Pasteur
  3. Rudolf Virchow
  4. Gregor Mendel
  5. Francis Crick
Grade 8 DNA, RNA, and Genetics
                is an organism's genetic makeup.
  1. Phenotype
  2. Genetics
  3. Genotype
  4. Gene
Grade 8 DNA, RNA, and Genetics
What is heterozygous?
  1. having two different alleles for a trait
  2. having two identical alleles for a trait
Grade 8 DNA, RNA, and Genetics
Parents give traits to their offspring through                  .
  1. pedigree
  2. heredity
  3. alleles
  4. natural selection
Grade 8 DNA, RNA, and Genetics
Gregor Mendel observed that two plants with purple flowers could produce some offspring with white flowers and some offspring with purple flowers. What did Mendel use to explain this result?
  1. genetic mutations
  2. environmental conditions
  3. inherited and acquired traits
  4. dominant and recessive traits
Grade 8 DNA, RNA, and Genetics
During which process do amino acids join to form a protein?
  1. mutation
  2. replication
  3. transcription
  4. translation
Grade 8 DNA, RNA, and Genetics
Different forms of a gene are
  1. genes.
  2. chromosomes.
  3. DNA.
  4. alleles.
Grade 8 DNA, RNA, and Genetics
A Punnett square shows possible combinations of
  1. DNA.
  2. chromosomes.
  3. traits.
  4. genes.
Grade 8 DNA, RNA, and Genetics
What kind of plants did Mendel use in his study of heredity?
  1. rose
  2. pea
  3. maize
  4. tundra
Grade 8 DNA, RNA, and Genetics
A species of plant has alleles for blue flowers (F) or white flowers (f). The two parent plants are represented by the genotype Ff and have blue flowers. Which of their offspring could pass on an allele for white flowers to the next generation?
  1. all the offspring
  2. all the offspring with white flowers
  3. all the blue offspring with genotype Ff as well as all the offspring with white flowers
Grade 8 DNA, RNA, and Genetics
Which process results in the production of sex cells?
  1. mitosis
  2. photosynthesis
  3. meiosis
  4. probability
Grade 8 DNA, RNA, and Genetics
What is genetic variation?
  1. any alteration in the sequence of DNA
  2. the normal differences found among individuals in a population
  3. the disappearance of all members of a species from earth
  4. any trait that helps an organism survive and reproduce under a given set of environmental conditions
Grade 8 DNA, RNA, and Genetics
In order for a female child to be born there must be
  1. an X and Y chromosome.
  2. two X chromosomes.
  3. two Y chromosomes.
Grade 8 DNA, RNA, and Genetics
Features inherited from parents are
  1. heredity.
  2. genes.
  3. traits.
  4. dominant.
Grade 8 DNA, RNA, and Genetics
Differences among organisms that help them survive better is
  1. mutation.
  2. genetic variation.
  3. species.
  4. genetic bottlenecking.
Grade 8 DNA, RNA, and Genetics
All genetic traits are visible.
  1. True
  2. False
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