Biology, 11.12.2019 06:31, SMNS625

An x-linked gene produces spots on some platyfish. all platyfish have an autosomal repressor that inhibits the expression of the spot-producing gene. the closely related swordtail lacks both the spot-producing gene and the repressor. in backcrosses between these two species, some hybrids receive the spot-producing gene but not the repressor. these individuals can develop malignant tumors, because the expression of the spot-producing gene is not properly regulated. this appears to be an example

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An x-linked gene produces spots on some platyfish. all platyfish have an autosomal repressor that in...