Cards (26)

  • What are the observable characteristics of an organism called?
    Phenotype
  • What is phenotypic variation?
    Difference in phenotypes within the same species
  • What can explain phenotypic variation in some cases?
    Genetic factors
  • How many alleles are involved in the ABO blood group system?
    Three
  • What causes the different blood groups in humans?
    Different alleles for the ABO gene
  • How can environmental factors affect phenotypic variation?
    By influencing growth and development
  • What happens to clones of plants with the same DNA in different environments?
    They grow to different heights
  • What is the formula that represents the relationship between phenotype, genotype, and environment?
    Phenotype = Genotype + Environment
  • How can genes affect an organism's phenotype?
    By having varying effects on characteristics
  • How many alleles do diploid organisms inherit for each gene?
    Two
  • What does the F8 gene code for?
    Blood-clotting protein Factor VIII
  • What condition can result from different alleles at the F8 gene locus?
    Haemophilia
  • What environmental factors can impact an organism's phenotype?
    Sunlight, nutrients, water, temperature, oxygen
  • How does a lack of nutrients affect plants with a tall genotype?
    They cannot grow to their full potential
  • Can phenotypic variation caused by environmental factors be inherited?
    No, it cannot be inherited
  • What happens to Drosophila melanogaster larvae on a diet of silver salts?
    They develop a yellow color
  • What is etiolation in plants?
    Growth in the dark leading to abnormal features
  • Why is genetic variation inherited while environmental variation is not?
    Genetic variation affects DNA of gametes
  • What is the impact of sunlight hours on organisms?
    It affects their growth and development
  • How does temperature range influence phenotypic variation?
    It affects growth and development processes
  • What role does oxygen level play in an organism's phenotype?
    It influences metabolic processes and growth
  • How can changes in environmental factors affect organisms?
    They can alter growth and development outcomes
  • What happens to plants grown in the dark?
    They develop long stems and curled leaves
  • What is the significance of the phrase "variation in phenotype due to genetics is inherited"?
    It means genetic changes affect gametes
  • What is the effect of magnesium deficiency on plants?
    They become yellow instead of green
  • Why is it important to understand the impact of environmental factors on phenotype?
    To comprehend how organisms adapt and survive