Reproduction

    Cards (19)

    • What is sexual reproduction?
      Joining (fusion) of male and female gametes
    • What type of cell division is involved in sexual reproduction?
      Meiosis
    • What type of cell division is involved in asexual reproduction?
      Mitosis
    • What is meiosis?
      Cell division that produces four daughter cells (gametes), each with a single set of chromosomes
    • What are the male and female sex chromosomes in humans?
      XXfemale, XY – male
    • What are the male and female gametes in flowering plants?
      Pollenmale gamete, ovulefemale gamete
    • What is the genetic material in cells called?
      DNA
    • What is the structure of DNA?
      Two complementary strands forming a double helix
    • What is a gene?
      Small section of DNA that codes for a particular amino acid sequence, to make a specific protein
    • What are alleles?
      Different forms of the same gene
    • What is a recessive allele?
      Allele that needs to be present twice to be expressed
    • What is a dominant allele?
      Allele that is always expressed, even if only one copy is present
    • What is a genome?
      The entire genetic material of an organism
    • Define the term homozygous.
      Two of the same alleles present in an organism
    • Define the term heterozygous.
      Two different alleles present in an organism
    • What type of allele causes polydactyly?
      Dominant allele
    • What type of allele causes cystic fibrosis?
      Recessive allele
    • How many chromosomes do normal human body cells have?
      23 pairs (46)
    • Why is studying the human genome important?
      • Search for genes linked to certain diseases
      • Understanding and treatment of inherited disorders
      • Tracing past human migration
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