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Dominant alleles are expressed while recessive are only expressed if both parents have recessive genes. For example, parents with the alleles DD and Dd will have offspring with children DD, DD, Dd, Dd.

The alleles can be passed from parents to offspring by random segregation into gametes.

Alleles and random segregation

An allele is a gene variant, one diploid individual receives one allele from the mother and the other from the father for a given gene locus.

  • The law of segregation states that alleles are randomly passed from parents to offspring through cells known as gametes.

  • These cells (gametes) are generated by a special type of cell division called meiosis, and then they fuse during the process of fertilization.

In conclusion, the alleles can be passed from parents to offspring by random segregation into gametes.

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