Primary sex characteristic in the context of "Anisogamous"

Play Trivia Questions online!

 or

Skip to study material about Primary sex characteristic in the context of "Anisogamous"
Ad spacer

⭐ Core Definition: Primary sex characteristic

A sex organ, also known as a reproductive organ, is a part of an organism that is involved in sexual reproduction. Sex organs constitute the primary sex characteristics of an organism. Sex organs are responsible for producing and transporting gametes, as well as facilitating fertilization and supporting the development and birth of offspring. Sex organs are found in many species of animals and plants, with their features varying depending on the species.

Sex organs are typically differentiated into male and female types.

↓ Menu

>>>PUT SHARE BUTTONS HERE<<<
In this Dossier

Primary sex characteristic in the context of Anisogamy

Anisogamy is a form of sexual reproduction that involves the union or fusion of two gametes that differ in size and/or form. The smaller gamete is male, a microgamete or sperm cell, whereas the larger gamete is female, a larger macrogamete or typically an egg cell. Anisogamy is predominant among multicellular organisms. In both plants and animals, gamete size difference is the fundamental difference between females and males.

Anisogamy most likely evolved from isogamy. Since the biological definition of male and female is based on gamete size, the evolution of anisogamy is viewed as the evolutionary origin of male and female sexes. Anisogamy is an outcome ofboth natural selection and sexual selection, and led the sexes to evolve different primary and secondary sex characteristics including sex differences in behavior.

↑ Return to Menu
LINKED FROM (PARENTS)
← Anisogamy ← Anisogamous
LINKS TO (CHILDREN)
Green algae → Chara (alga) → Antheridium → Archegonium → Organism → Sexual reproduction → Sex characteristics → Gametes → Fertilization → Birth → Male → Female →