Sex-specific morphs exhibit discrete phenotypes, often including many disparate traits, that
are observed in only one sex. These morphs have evolved independently in many different …

Cichlid fishes are a very diverse and species-rich family of teleost fishes that inhabit lakes
and rivers of India, Africa, and South and Central America. Research has largely focused on …

Synopsis “Sex” is often used to describe a suite of phenotypic and genotypic traits of an
organism related to reproduction. However, these traits—gamete type, chromosomal …

In vertebrates, mainly single genes with an allele ratio of 1: 1 trigger sex-determination (SD),
leading to initial equal sex-ratios. Such genes are designated master-key regulators (MKRs) …

The impact of sex chromosomes and their turnover in speciation remains a subject of
ongoing debate in the field of evolutionary biology. Fishes are the largest group of …

The process of sexual development in animals is modulated by a variety of mechanisms.
Some species respond to environmental cues, while, in others, sex determination is thought …

The sea cucumber Apostichopus japonicus, a key species in Chinese aquaculture, plays a
significant evolutionary role within the Echinodermata phylum. However, the sex …

Sex determination (SD) is not conserved among teleost fishes and can even differ between
populations of the same species. Across the outstandingly species-rich fish family Cichlidae …

Genetic sex determination (SD) in most vertebrates is controlled by a single master sex
gene, which ensures a 1: 1 sex ratio. However, more complex systems abound, and several …

Fishes provide a unique and intriguing model system for studying the genomic origin and
evolutionary mechanisms underlying sex determination and high sex-chromosome turnover …