How many alleles does a person carry for a trait?

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.

Most traits are determined by more than two alleles. Multiple forms of the allele may exist, though only two will attach to the designated gene site during meiosis. Also, some traits are controlled by two or more gene sites. Both possibilities multiply the number of alleles involved.

Explanation:

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2

Explanation:

Everyone carries 2 alleles in Mendelian genetics. The exception to this is in polygenetic genes such as height. Alleles can be dominant, which is represented by a capital letter, or recessive, which is lowercase. A person can either have two recessive (aa), two dominant (AA), or a mix (Aa).

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