For 10 points, name this trait possessed by humans with XX sex chromosomes.
Green spoonworms will develop this trait in the absence of others with it. In polygynous [puh-LIJ-uh-nuhs] species, organisms with this trait are favored if their mothers are in poor condition, according to the Trivers–Willard hypothesis. In the haplo-diploidy system, organisms with this trait develop from fertilized diploid eggs. During development, low and high egg temperatures increase the percentage of American alligators with this trait. Birds and butterflies with this trait have ZW chromosomes. For 10 points, name this trait possessed by humans with XX sex chromosomes.
Green spoonworms will develop this trait in the absence of others with it.
females [or femaleness; or feminine; accept equivalents and word forms]