Biology by Bradford
A4.1 Evolution and speciation: grass skirts
18 quick questions on evolution and speciation, 10 of them at standard level, each answered in a word or two. Print a sheet for each team, a key for the checker and a tick sheet, then tape the sheets to the board and race.
How it runs
- SnipA runner cuts one strip off the bottom of their team’s sheet.
- Answer as a pairBack at the table, they write the answer on the strip. No books.
- Get it checkedThe checker reads it against the key: you, or a student holding it.
- Back for the nextA tick earns the next strip. Wrong? Back to the table to try again.
The questions on this sheet
The checker’s key, with every answer, prints with the sheets.- Change in heritable traits of a population
- Farmers picking parents for desired traits
- Shared plan from a common ancestor
- Bird wing and insect wing, for example
- Splitting of one gene pool into two
- Ancestor of kale, broccoli and sprouts
- Five-digit plan of tetrapod arms and legs
- Unrelated groups gaining similar traits
- Barrier stopping two groups interbreeding
- Ape split from chimps by the Congo River
- Divergence of geographically split groups
- Divergence within one shared area
- Rapid diversification from one ancestor
- Breeding seasons that do not overlap
- Different courtship displays block mating
- Infertility of offspring of two species
- Having more than two chromosome sets
- Plant genus showing abrupt speciation