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Genetics Review

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  • What do the letters on the inside of a punnett square represent?
    Possible genotypes of offspring
  • What is Chargaff's rule?
    %A = %T, %C = %G
  • One leg is dominant (L) to two legs (l). If two parents that carried the gene for two legs were crossed, what is the probability that the offspring will be homozygous recessive?
    1/4, 25%
  • Give na example of a mutagen.
    Answers vary
  • What is the complementary RNA strand? TACGTATGCGAGCT
    AUGCAUACGCUCGA
  • Vocabulary: Double-stranded nucleic acid
    DNA
  • What is the product of DNA replication?
    Two identical DNA molecules
  • Vocabulary: genotypes made of the same alleles
    Homozygous
  • Vocabulary: gene that is always expressed
    Dominant
  • What is a genotype?
    Determines a trait that will be expressed (represented in dominant/recessive)
  • What nitrogen bases are found in RNA?
    A, U, C, G
  • Vocabulary: Variation of a gene
    Allele
  • Vocabulary: Study of heredity
    Genetics
  • Vocabulary: single-stranded nucleic acid
    RNA
  • Vocabulary: Genotype made up of different alleles
    Heterozygous
  • Vocabulary: gene that is only expressed in the homozygous state
    Recessive
  • What is a phenotype?
    Observable trait
  • What nitrogen bases are found in DNA?
    A, G, T, C
  • Name 2 similarities between RNA and DNA.
    Answers vary
  • Name 2 differences between RNA and DNA.
  • What is the complementary DNA strand? ATGCTAGTAATGCT
    TACGATCATTACGA
  • A homozygous recessive parent and a heterozygous parent are crossed. Draw the punnett square and bring to me.
    Answers vary
  • Vocabulary: A section of DNA that codes for a protein
    Gene
  • Vocabulary: DNA that is wound up around a protein
    Chromosome
  • What are the three parts that make up a nucleotide?
    5-Carbon sugar, phosphate group, nitrogenous base
  • What do the letters on the outside of a punnett square represent?
    Genotypes of parents