I keep getting “Law of segregation” questions wrong in Principles of Inheritance and Variation. What's the trap?
thinking both alleles of a gene can enter the same gamete.
The usual trap: thinking both alleles of a gene can enter the same gamete. How to avoid it: gametes are always pure -- exactly one allele of each gene per gamete. Go back to the definition — the two alleles of a gene separate during gamete formation, so each gamete carries only one of them.
Key point
Law of segregation
Common mistake
thinking both alleles of a gene can enter the same gamete.
Memory tip
gametes are always pure -- exactly one allele of each gene per gamete.
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