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Gynandromorph Animals - BBC Earth article

November 23, 2020 Sam Long
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This BBC Earth article explores the rare phenomenon of bilateral gynandromorphs, or animals which develop different physical sex characteristics on their left and right side. This occurs when a cycle of meiosis yields multiple viable eggs rather than one egg and three polar bodies to be discarded. When two eggs are fertilized by sperm, mosaicism can occur in the sex chromosomes.

When introducing students to the article, the teacher should be sure to note that overgeneralizing language is briefly used to describe humans (“In humans, men have an X and a Y chromosome, while women have two X chromosomes.”) However, the article can still have value in demonstrating the nonbinary nature of biological sex and the scientific processes by which evidence is gathered to support this.

read the article

A Reddit post shows a gynandromorph lobster found in the wild:

Reddit post
In articles for students Tags language, gender binary, biological development, sexual reproduction, meiosis, anatomy
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