<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/schema/zthes-1.0.dtd">  <Zthes><term><termId>32488</termId><termName>CROMOSOMAS SEXUALES</termName><termType>PT</termType><termLanguage>es-ES</termLanguage><termVocabulary>TESAURO DE MATERIAS DE SERBIULA</termVocabulary>	<termStatus>active</termStatus>	<termApproval>approved</termApproval>	<termSortkey>CROMOSOMAS SEXUALES</termSortkey><termCreatedDate>CROMOSOMAS SEXUALES</termCreatedDate><relation><relationType>UF</relationType><termId>32490</termId><termName>Gonosomas</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>13844</termId><termName>CROMOSOMAS</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>66635</termId><termName>DETERMINACION GENETICA DEL SEXO</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>13832</termId><termName>ENLACES (GENETICA)</termName><termType>PT</termType></relation></term>  </Zthes>