A Level Biology Revision (Year 13) Multiple Alleles @Freesciencelessons
A Level Biology Revision (Year 13) Multiple Alleles  @Freesciencelessons
Uploaded March 2025 | Updated September 2026, 9 hours ago
In this video, we look at multiple alleles. First we explore what is meant by multiple alleles. We then look at how the ABO blood group system in humans is an example of multiple alleles. Finally, we look at genetic crosses involving the ABO blood group alleles.
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A Level Biology Revision (Year 13) "Multiple Alleles"

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