AQA GCSE Combined Science: Trilogy (8464) — Biology — Foundation · 4.6.3.1

Evidence for evolution Flashcards – AQA GCSE Combined Science: Trilogy (8464) — Biology — Foundation

Revise AQA GCSE Combined Science: Trilogy (8464) — Biology — Foundation specification point 4.6.3.1, Evidence for evolution, with free active-recall flashcards. Flip through the set or review every question and answer below.

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Cards in this set (4)

What genetic variation can make some bacteria resistant to an antibiotic?

Some bacteria carry an allele that confers resistance to the antibiotic.

How does an antibiotic affect the survival and reproduction of susceptible and resistant bacteria?

Susceptible bacteria are more likely to die; resistant bacteria are more likely to survive and reproduce.

How is an antibiotic-resistance allele passed to the next bacterial generation?

Surviving bacteria pass the allele to their offspring.

How can an antibiotic-resistant bacterial strain arise over many generations?

Resistant bacteria can become more common in the population, producing a resistant strain.