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Tenth Grade (Grade 10) DNA, RNA, and Genetics Questions

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Grade 10 DNA, RNA, and Genetics
Genetic disorders are caused by
  1. faulty proteins.
  2. genetic mutations.
  3. damaged genes.
  4. all of the above
Grade 10 DNA, RNA, and Genetics
The purpose of transcription is to produce
  1. proteins.
  2. DNA.
  3. RNA.
  4. amino acids.
Grade 10 DNA, RNA, and Genetics
A genotype describes
  1. when two alleles of a particular gene are the same.
  2. the set of alleles of an organism.
  3. different versions of a gene.
  4. none of the above
Grade 10 DNA, RNA, and Genetics
A nucleotide consists of
  1. a nitrogen base.
  2. a nitrogen base and a sugar.
  3. a nitrogen base, sugar, and phosphate.
  4. two nitrogen bases, a sugar, and a phosphate.
Grade 10 DNA, RNA, and Genetics
Which set of structures did your mother and father each pass on to you?
  1. corpuscles
  2. cells
  3. placebos
  4. chromosomes
Grade 10 DNA, RNA, and Genetics
A normal human diploid zygote contains
  1. 23 chromosomes.
  2. 46 chromosomes.
  3. 44 chromosomes.
  4. XXY chromosomes.
Grade 10 DNA, RNA, and Genetics
Hemophilia is a genetic disorder that is
  1. sex-linked.
  2. sex-influenced.
  3. fairly common.
  4. more common in women than men.
Grade 10 DNA, RNA, and Genetics
A strand of DNA is exposed to intense heat. Which statement BEST describes what will happen to the strand of DNA?
  1. The chemical bonds of the DNA molecule will be broken.
  2. More nitrogen base pairs will add on to the DNA molecule.
  3. The chemical bonds of the DNA molecule will be strengthened.
  4. The nitrogen base pairs in the DNA molecule will switch places.
Grade 10 DNA, RNA, and Genetics
In addition to mutation, what is the basic source of genetic variation in a species that reproduces sexually?
  1. adaptation
  2. mitosis
  3. recombination
  4. competition
Grade 10 DNA, RNA, and Genetics
Gregor Mendel concluded that traits are
  1. not inherited by offspring.
  2. inherited through the passing of factors from parents to offspring.
  3. determined by dominant factors only.
  4. determined by recessive factors only.
Grade 10 DNA, RNA, and Genetics
The random distribution of homologous chromosomes during meiosis is
  1. independent assortment.
  2. random fertilization.
  3. telophase.
  4. a random mutation.
  5. a mismatch.
Grade 10 DNA, RNA, and Genetics
Gametes are
  1. chromosomes.
  2. prophases.
  3. haploid cells.
  4. cross-over cells.
Grade 10 DNA, RNA, and Genetics
What type of mutation has occurred if the original sequence of DNA is CCC but is now CCA?
  1. frameshift mutation
  2. deletion mutation
  3. insertion mutation
  4. substitution mutation
Grade 10 DNA, RNA, and Genetics
Most sex-linked genes are found on the
  1. Y chromosome.
  2. O chromosome.
  3. YY chromosomes.
  4. X chromosome.
Grade 10 DNA, RNA, and Genetics
The different forms of a gene are                .
  1. traits
  2. pollinations
  3. alleles
  4. hybrids
Grade 10 DNA, RNA, and Genetics
A man with the genotype AABBCCDDEE marries a woman with the genotype aabbccddee. What is the expected genotypic ratio of their offspring?
  1. 50% homozygous dominant : 50% homozygous recessive
  2. 100% homozygous recessive
  3. 100% heterozygous
  4. 25% heterozygous : 50% homozygous dominant : 25% homozygous recessive
Grade 10 DNA, RNA, and Genetics
This scientist made major strides in genetic studies by studying pea plants.
  1. Darwin
  2. Linnaeus
  3. Mendel
  4. Einstein
Grade 10 DNA, RNA, and Genetics
What base pairing is incorrect for DNA?
  1. C-G
  2. A-U
  3. A-T
Grade 10 DNA, RNA, and Genetics
DNA is compacted and organized into structures called
  1. histones.
  2. chromosomes.
  3. chromatids.
  4. genomes.
  5. genes.
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