Gametes that are the same size and shape is known as ___.

The gametes that are indistinguishable on the basis of size, shape and behaviour from other gametes are called as isogametes. Their morphology is similar but with different allele expression. They appear in first stage of reproduction. The isogametes cannot be classified as male or female gametes. The isogametes are occured in three forms such as motile, non-motile and conjugation form.