Question: Where do the symbols for male and female come from?

Disambiguated questions and answers:
context: No context provided
question: Where did the symbols for male and female originate?
short_answers: astrological symbols, denoting the classical planets Mars and Venus
context: The two standard sex symbols are the Mars symbol ♂ (often considered to represent a shield and spear) for male and Venus symbol ♀ (often considered to represent a bronze mirror with a handle) for female, derived from astrological symbols, denoting the classical planets Mars and Venus, respectively, and the elements iron and copper by alchemists. They were first used to denote the effective sex of plants (i.e. sex of individual in a given crossbreed, since most plants are hermaphroditic) by Carl Linnaeus in 1751. They are still used in scientific publications to indicate the sex of an individual, for example of a patient. However, pedigree charts published in scientific papers now more commonly use a square for male and a circle for female.
question: Where did the alchemists' symbols for male and female come from?
short_answers: the elements iron and copper
wikipage: Gender symbol
context: No context provided
question: Where did anthropologists' symbols for male and female come from?
short_answers: kinship diagrams

Long-form answers:
knowledge: content: The use of shapes as gender symbols may have originated from kinship diagrams in anthropology,[9] where a circle represents a female and a triangle represents a male.[10] The earliest form of kinship diagram that displays this is from 1871: Morgan's System of Consanguinity and Affinity of Human Family.[11] W. H. R River's system migrated to large letters for male, small letters for female, while in algebreic-type equations, the numerator denotes male and the denominator female.[12] Later, in C. G. Seligman's 1910 Dance Diagram, outlined circles illustrated females and shaded circles indicated males.[13]
wikipage: Gender symbol
content: These symbols are derived from the initial letters of the Ancient Greek names of the classical planets Mars, Venus and Mercury and associated with the alchemical elements iron, copper and quicksilver (mercury), respectively.[1] Joseph Justus Scaliger speculated that the male symbol is associated with Mars, god of war because it resembles a shield and spear; and that the female symbol is associated with Venus, goddess of beauty because it resembles a bronze mirror with a handle.[7] Later scholars dismiss this as fanciful,[1][a] preferring "the conclusion of the French classical scholar Claude de Saumaise (Salmasius, 1588–1683) that these symbols [...] are derived from contractions in Greek script of the Greek names of the planets".[1][b]
wikipage: Gender symbol
content: The use of shapes as gender symbols may have originated from kinship diagrams in anthropology,[9] where a circle represents a female and a triangle represents a male.[10]
wikipage: Gender symbol
long_answer: The three standard sex symbols are the male symbol ♂ and the female symbol ♀ and the hybrid symbol ×. They were first used to determine the sex of plants by Carl Linnaeus in 1751. These symbols are derived from the initial letters of the Ancient Greek names of the classical planets Mars, Venus and Mercury and are also associated with the elements iron, copper and quicksilver (mercury). The use of shapes as gender symbols may have originated from kinship diagrams in anthropology, where a circle represents a female and a triangle represents a male.