What’s on the Speciation poster
Allopatric against Sympatric, side by side.
- Allopatric: Geographic separation first
- Allopatric: Populations diverge independently
- Allopatric: Mutation, drift and different selection
- Allopatric: Isolation becomes reproductive
- Allopatric: The commonest route
- Sympatric: No geographic separation
- Sympatric: Ecological, behavioural or temporal isolation
- Sympatric: Polyploidy — common in plants
- Sympatric: Rarer, and contested in animals
- Prezygotic barriers prevent mating; postzygotic barriers prevent viable fertile offsp…
Ring species — where adjacent populations interbreed but the ends do not — show speciation as a continuum, not an event.
Questions about the Speciation poster
- What’s on the Speciation poster?
- Allopatric against Sympatric, side by side. Allopatric: Geographic separation first; Allopatric: Populations diverge independently; Allopatric: Mutation, drift and different selection; Allopatric: Isolation becomes reproductive; Allopatric: The commonest route; Sympatric: No geographic separation; Sympatric: Ecological, behavioural or temporal isolation; Sympatric: Polyploidy — common in plants; Sympatric: Rarer, and contested in animals; Prezygotic barriers prevent mating; postzygotic barriers prevent viable fertile offsp…. Ring species — where adjacent populations interbreed but the ends do not — show speciation as a continuum, not an event.
- Who is the Speciation poster for?
- Speciation belongs to the Biology section rather than to a school year, because life science is not something one grade owns. Anyone learning evolution can pin it up — a beginner, a student mid-course, or someone revising years later.
- When should you use the Speciation poster?
- Reproductive isolation is the requirement. Geography is the commonest cause of it. A wall chart earns its place by being glanceable from where the work is happening, so Speciation belongs on the wall where that life science work actually happens, within glancing distance, rather than filed away.
- What other posters go with Speciation?
- Adaptations, Artificial Selection and Classification sit alongside Speciation in the Biology section. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.AdaptationsArtificial SelectionClassification
- Is the Speciation poster free to download and print?
- Yes. Speciation downloads as a free PDF with no account, no email and no watermark, like everything else in the Biology section. Print as many copies as you like for a home, a classroom, a library or a tutoring group; reselling the file is the only thing the licence rules out.Read the licence
- What size does the Speciation poster print at?
- Speciation is a vector PDF laid out for US Letter, and prints on A4 with Fit to page — the same file, no separate download. Because every mark on it is drawn rather than photographed, it stays sharp enlarged to A3, A2 or A1 at a copy shop. Colour carries emphasis only, so a greyscale print of Speciation loses nothing.Printing guide
Related posters
Charts that sit alongside Speciation on the same wall.
Browse every Biology poster, or start from the full catalogue.