Genetic Diversity (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 is a gene?
What is a gene?
A section of DNA coding for a polypeptide
What is a locus?
What is a locus?
The specific position of a gene on DNA
What are homologous chromosomes?
What are homologous chromosomes?
Chromosome pairs, one from each parent
How many gametes does one parent cell produce during meiosis?
How many gametes does one parent cell produce during meiosis?
Four genetically unique gametes
When does independent segregation of homologous chromosomes occur?
When does independent segregation of homologous chromosomes occur?
During meiosis I
How many chromosome combinations can independent segregation produce in human gametes?
How many chromosome combinations can independent segregation produce in human gametes?
Over 8 million different combinations
When does crossing over occur?
When does crossing over occur?
During early stages of meiosis I
What does crossing over produce?
What does crossing over produce?
Recombinant chromosomes with mixed DNA
What formula calculates possible gamete combinations from independent segregation? ( = pairs)
What formula calculates possible gamete combinations from independent segregation? ( = pairs)
Why is genetic variation from meiosis important for evolution?
Why is genetic variation from meiosis important for evolution?
It provides material for natural selection