1.6.20

Genotype vs Phenotype

Test yourself

Genotype vs Phenotype

When talking about the inheritance of characteristics, we use the words genotype and phenotype:

Illustrative background for GenotypeIllustrative background for Genotype ?? "content

Genotype

  • Genotype refers to the combination of alleles an organism has.
    • If the two alleles are different, we say that the person is heterozygous (Bb).
    • If the two alleles are the same, we say that the person is homozygous (BB or bb).
Illustrative background for PhenotypeIllustrative background for Phenotype ?? "content

Phenotype

  • A phenotype is an observed characteristic of an individual.
  • The phenotype is determined by the interaction between the genotype and environment.
  • Earlobes being attached or free is an example of a phenotype, where the alleles present will determine a characteristic, unless the environment interferes.

Jump to other topics

1Biology

1.1Cells, Tissues & Organs

1.2Reproduction & Variation

1.3Ecological Relationships & Classification

1.4Digestion & Nutrition

1.5Plants & Photosynthesis

1.6Biological Systems & Processes

2Chemistry

2.1Particles

2.2Chemical Reactions

2.3Atoms, Elements, Compounds

2.4The Periodic Table

2.5Materials & the Earth

2.6Reactivity

2.7Energetics

2.8Properties of Materials

3Physics

3.1Energy

3.2Forces & Motion

3.3Waves

3.4Electricity & Magnetism

3.5Matter

3.6Space Physics

4Thinking Scientifically

Go student ad image

Unlock your full potential with GoStudent tutoring

  • Affordable 1:1 tutoring from the comfort of your home

  • Tutors are matched to your specific learning needs

  • 30+ school subjects covered

Book a free trial lesson