1.3.17

Evidence for Evolution

Test yourself

The Evidence for Evolution

The discovery of genes as a mechanism (way) to inherit characteristics and create variance supported the theory of evolution. In addition to this, the two main sources of evidence are:

Illustrative background for FossilsIllustrative background for Fossils ?? "content

Fossils

  • Fossils show the gradual changes in organisms over vast periods of time.
Illustrative background for Antibiotic resistant bacteriaIllustrative background for Antibiotic resistant bacteria ?? "content

Antibiotic resistant bacteria

  • Natural selection neatly explains this phenomenon:
  • Bacteria reproduce rapidly.
  • Mutations occur during reproduction.
  • If a mutated bacterium is resistant to antibiotics, it will survive exposure to antibiotics and go on to reproduce.
  • This bacterium will represent the original ancestor of a new resistant strain.

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