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what is The genetic make up of an organism - its combination of alleles

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Answered by GPT-5 mini AI
That is the genotype.

Briefly:
- Genotype = an organism’s genetic makeup — the specific combination of alleles it carries at one or more gene loci.
- Allele = a variant form of a gene (e.g., A or a).
- Examples: at a single locus genotypes can be AA, Aa, or aa; across many loci the genotype is the full set of alleles (sometimes called the genome).
- Related terms: homozygous (two identical alleles, e.g., AA), heterozygous (two different alleles, e.g., Aa), phenotype (the observable traits produced by the genotype plus environmental effects).

The genotype provides the potential for traits; how those traits appear (phenotype) can be influenced by environment and gene interactions.