Introduction (AQA A-Level Biology): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What does biodiversity encompass?
What does biodiversity encompass?
Variety of species, individuals within species, and cells/tissues
What term describes the particular position of a gene on a DNA molecule?
What term describes the particular position of a gene on a DNA molecule?
Locus
What does the universality of the genetic code provide evidence for?
What does the universality of the genetic code provide evidence for?
Common evolutionary origin of all life
What does DNA stability enable?
What does DNA stability enable?
Faithful reproduction of parental traits
How does meiosis contribute to genetic variation?
How does meiosis contribute to genetic variation?
By random shuffling of chromosomes
What are mutations?
What are mutations?
Spontaneous random changes to DNA structure
What advantage do better-adapted individuals have in a population?
What advantage do better-adapted individuals have in a population?
Increased survival and reproduction
What does natural selection act upon?
What does natural selection act upon?
Existing genetic diversity in populations
How is within-species diversity measured?
How is within-species diversity measured?
By comparing DNA or protein sequences
What do diversity indices incorporate?
What do diversity indices incorporate?
Species richness and evenness