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Genotype vs. Phenotype quiz #5 Flashcards

Genotype vs. Phenotype quiz #5
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  • What term describes the way an organism looks as a result of its genes?
    Phenotype
  • Which of the following is an example of a phenotype influenced by the environment?
    The color of hydrangea flowers changing with soil pH is an example of environmental influence on phenotype.
  • How are genotype and phenotype alike? Different?
    Genotype and phenotype are related as genotype determines phenotype, but they differ as genotype is genetic makeup and phenotype is observable traits.
  • If the physical appearance of an organism is its phenotype, what does its genotype represent?
    Its genotype represents the genetic makeup that determines the physical appearance.
  • Two brown-eyed parents have a blue-eyed child. How is this possible?
    This is possible if both parents carry recessive alleles for blue eyes, allowing the child to inherit them.
  • Which of the following describes a phenotype?
    Phenotype is the observable trait, such as color, shape, or size.
  • Which of the following statements about a person's phenotype is correct?
    A person's phenotype is influenced by both their genotype and environmental factors.
  • Which combination of alleles represents the same phenotype but different genotypes?
    AA and Aa represent the same dominant phenotype but different genotypes.
  • How can you determine the genotype of a plant showing the dominant phenotype of red color?
    You can perform a test cross with a homozygous recessive plant to determine the genotype.
  • Which statement regarding genotypes and phenotypes is false?
    Genotypes can always be determined by observing phenotypes.
  • What is the genotype of this mouse?
    The genotype would depend on the specific alleles shown for that mouse.
  • Are environmental factors more likely to affect genotype or phenotype?
    Environmental factors are more likely to affect phenotype.
  • Which of the following best describes a person's genotype?
    A person's genotype is their genetic makeup, represented by alleles.
  • What is the difference between an inherited trait and a trait shaped by the environment?
    An inherited trait is determined by genotype, while a trait shaped by the environment is influenced by external factors.
  • Which of the following statements about genotypes and phenotypes is true?
    Genotypes determine phenotypes, but phenotypes can be influenced by environmental factors.
  • How many different genotypes are in this rabbit population?
    The number of different genotypes would depend on the alleles present in the population.
  • What is the genotype of a normal human female?
    The genotype would be XX, with no recessive alleles for sex-linked traits.
  • What is the difference between genotype and phenotype in genetics?
    Genotype refers to the genetic makeup or combination of alleles in an organism, while phenotype is the observable physical trait that results from the genotype.
  • What is a homozygous genotype, and what are its two types?
    A homozygous genotype has two identical alleles for a gene. The two types are homozygous dominant (two dominant alleles, e.g., YY) and homozygous recessive (two recessive alleles, e.g., yy).
  • If a pea plant has the genotype Yy, what is its phenotype and why?
    The phenotype is yellow peas because the dominant Y allele masks the effect of the recessive y allele.
  • Why is understanding the distinction between genotype and phenotype important in studying inheritance patterns?
    Understanding the distinction helps explain how traits are passed on and why organisms with different genotypes can have the same phenotype, which is essential for predicting inheritance patterns.