530
Makes perfect sense
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A place for majestic STEMLORD peacocking, as well as memes about the realities of working in a lab.

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Or they're all chimeras, but the frog part is hemizygous (so has to express the gene) and the piggie part is X recessive heterozygous (so has another allele that can suppress the gene), and the gene controls which end of chimeric scale (frog to pig) the body tips