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Answer: Alleles

Explanation: Genes come in different varieties, called alleles. Somatic cells contain two alleles for every gene, with one allele provided by each parent of an organism.

Each parent gives one ALLELE to the offspring to form a genotype.

An allele is a gene variant. which is inherited from each parent.

During fecundation, each parental gamete provides a different allele of a given gene/locus in order to form the genotype of an individual.

If both parents provide the same allele of a given gene/locus, then the individual is homo-zygous for that gene.

If both parents provide different alleles of a given gene/locus, then the individual is heterozygous for that gene.

In conclusion, one allele is inherited from the mother and the other allele from the father.

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