The DNA Basics
45 Questions
2 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which molecule is responsible for carrying the genetic instructions in cells?

  • RNA
  • Protein
  • DNA (correct)
  • Carbohydrate

    • Where is DNA contained in a cell?

  • Nucleus (correct)
  • Cell membrane
  • Cytoplasm
  • Mitochondria

    • Which term describes a segment of DNA that encodes the instructions to express a heritable trait?

  • Phenotype
  • Genotype
  • Gene (correct)
  • Allele

    • Who first identified DNA in 1869?

    <p>Friedrich Miescher (A)</p> Signup and view all the answers

    What is an organism called if it inherits one allele from its mother and one allele from its father?

    <p>Heterozygous (A)</p> Signup and view all the answers

    What is the structure of the DNA molecule called?

    <p>Double helix (D)</p> Signup and view all the answers

    What is the term for the pair of alleles an organism has?

    <p>Genotype (A)</p> Signup and view all the answers

    Which nitrogen base pairs with adenine in DNA?

    <p>Thymine (A)</p> Signup and view all the answers

    What is the term for the trait that is expressed?

    <p>Phenotype (A)</p> Signup and view all the answers

    What are the components of a DNA double helix?

    <p>Deoxyribose, Phosphate, Nitrogen base (B)</p> Signup and view all the answers

    What is the term for a version of a gene?

    <p>Allele (A)</p> Signup and view all the answers

    What type of trait is black coat color in cats?

    <p>Dominant (C)</p> Signup and view all the answers

    Which pattern of inheritance is too complex to be explained solely by the dominant-recessive pattern or incomplete dominance?

    <p>Polygenic inheritance (D)</p> Signup and view all the answers

    What is the chemical structure of PTC similar to?

    <p>Toxic alkaloids found in some poisonous plants (D)</p> Signup and view all the answers

    Where is DNA arranged into compartments called chromosomes?

    <p>In the nucleus of a cell (C)</p> Signup and view all the answers

    How many chromosomes are found in a complete set in humans?

    <p>46 (A)</p> Signup and view all the answers

    What is the purpose of mitosis in our bodies?

    <p>Cellular repair and growth of a multicellular organism (C)</p> Signup and view all the answers

    What is the purpose of meiosis in our bodies?

    <p>Formation of gametes (D)</p> Signup and view all the answers

    What happens if mitosis doesn't happen properly?

    <p>Abnormal cell growth and development (C)</p> Signup and view all the answers

    What happens if meiosis doesn't happen properly?

    <p>Formation of non-functional gametes (A)</p> Signup and view all the answers

    Which scientist(s) unraveled the structure of the DNA molecule?

    <p>James Watson and Francis Crick (B)</p> Signup and view all the answers

    What are the four nitrogen bases found in DNA?

    <p>Adenine, Cytosine, Guanine, Thymine (D)</p> Signup and view all the answers

    Where is DNA contained in a cell?

    <p>Nucleus (C)</p> Signup and view all the answers

    What is the structure of the DNA molecule called?

    <p>Double helix (A)</p> Signup and view all the answers

    What is the purpose of mitosis in our bodies?

    <p>To produce identical cells (C)</p> Signup and view all the answers

    What is the purpose of meiosis in our bodies?

    <p>To produce gametes (A)</p> Signup and view all the answers

    What is the term for a version of a gene?

    <p>Allele (C)</p> Signup and view all the answers

    What is the term for the pair of alleles an organism has?

    <p>Genotype (D)</p> Signup and view all the answers

    Which term describes an organism that inherits one dominant allele and one recessive allele?

    <p>Heterozygous (B)</p> Signup and view all the answers

    What is the genotype of a purebred white cat?

    <p>bb (B)</p> Signup and view all the answers

    What is the phenotype of a purebred black cat?

    <p>Black coat (B)</p> Signup and view all the answers

    What is the probability of producing white coat kittens when crossing two hybrid black offspring?

    <p>25% (D)</p> Signup and view all the answers

    Which pattern of inheritance results in a blending of the two forms of a trait?

    <p>Incomplete dominance (A)</p> Signup and view all the answers

    What is the term for a segment of DNA that encodes the instructions to express a heritable trait?

    <p>Gene (A)</p> Signup and view all the answers

    What is the term for what the trait looks like?

    <p>Phenotype (B)</p> Signup and view all the answers

    What is the term for what alleles the genes are made of?

    <p>Genotype (A)</p> Signup and view all the answers

    What is the purpose of meiosis in sexually reproducing organisms?

    <p>To produce gametes for sexual reproduction (B)</p> Signup and view all the answers

    What is the purpose of mitosis in multicellular organisms?

    <p>To produce offspring that are genetically identical to the parent (A)</p> Signup and view all the answers

    What happens if meiosis doesn't happen properly?

    <p>The zygote will end up with an incomplete set of chromosomes (A)</p> Signup and view all the answers

    What happens if mitosis doesn't happen properly?

    <p>The zygote will end up with an incomplete set of chromosomes (D)</p> Signup and view all the answers

    How many chromosomes are found in a complete set in humans?

    <p>46 (A)</p> Signup and view all the answers

    Where is DNA arranged into compartments called chromosomes?

    <p>In the nucleus of a cell (D)</p> Signup and view all the answers

    What is the chemical structure of PTC similar to?

    <p>Toxic alkaloids found in some poisonous plants (D)</p> Signup and view all the answers

    What is the purpose of meiosis in our bodies?

    <p>To produce gametes for sexual reproduction (B)</p> Signup and view all the answers

    What is the purpose of mitosis in our bodies?

    <p>To produce offspring that are genetically identical to the parent (A)</p> Signup and view all the answers

    More Like This

    DNA Structure and Function Quiz
    9 questions

    DNA Structure and Function Quiz

    BenevolentRomanesque avatar
    BenevolentRomanesque
    Biology: Genetic Instructions and Protein Synthesis
    17 questions

    Biology: Genetic Instructions and Protein Synthesis

    SuaveSulfur avatar
    SuaveSulfur
    DNA Structure Quiz
    10 questions

    DNA Structure Quiz

    MightyAutomatism avatar
    MightyAutomatism
    DNA Structure and Functions Quiz
    11 questions

    DNA Structure and Functions Quiz

    SuccessfulRuby9458 avatar
    SuccessfulRuby9458
    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser