The law of segregation states that allele pairs separate during gamete formation. How then do we have two alleles for a trait?

During gamete formation, the two alleles an individual has for a gene separate, so each egg or sperm carries just one allele. At fertilization, the offspring receives one allele from each parent, giving it a pair again. Therefore, “We receive one allele from each parent” is correct; the alleles do not come from one parent at separate times.

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