A statement like "IQ is heritable" is neither science nor pseudoscience, it's just a statement that is either true, false or e.g. 80% true with 20% determined by other factors.
Doing studies to prove or disprove it, like ones on separated twins referenced here in comments -- this is science.
Saying that this statement is false because it's racist -- this is pseudoscience.
Doing studies to prove or disprove it, like ones on separated twins referenced here in comments -- this is science.
Saying that this statement is false because it's racist -- this is pseudoscience.