[quad.ri.va.lent] adj [ISV] (1865) 1: tetravalent
2: composed of four homologous chromosomes synapsed in meiotic prophase
[2]quadrivalent n (1923): a quadrivalent chromosomal group
[quad.ri.va.lent] adj [ISV] (1865) 1: tetravalent
2: composed of four homologous chromosomes synapsed in meiotic prophase
[2]quadrivalent n (1923): a quadrivalent chromosomal group
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012