MEIOSIS AND INTERSEXUALITY IN RECIPROCAL DREPANA HYBRIDS (LEP.)

Meiosis in two human reciprocal translocations.

Analysis of meiotic chromosomes from two human male translocation heterozygotes is reported. One had total sterility after maturation arrest and chain configurations at meiosis, and the second had a abnormal children who were presumed to be genetically unbalanced.

A comarison between in vitro culture of two tomato parental lines and their reciprocal hybrids

Meiosis in sesquidiploid hybrids of Lycopersicon esculentum and Solanum lycopersicoides.

We have synthesized diploid hybrids between Lycopersicon esculentum and Solanum lycopersicoides and have converted them to allotetraploids. Two sesquidiploids, having two complements of the former parent and one of the latter, have been obtained by backcrossing the former parent with the alloploid. In meiosis of the sesquidiploid the L. esculentum chromosomes exhibit strong preferential pairing...

Differential performance of reciprocal hybrids in multiple environments

1. Closely related taxa may be maintained as distinct species by a variety of reproductive isolating mechanisms. These include: inability to produce hybrid offspring, endogenous selection against hybrids in the form of genomic incompatibilities, and exogenous selection observable in genotypeby-environment interactions. To understand the relative importance of these three isolating mechanisms, w...

Intersexuality in the horse.