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Document Type

Research

Abstract

Recent and extensive use of Ambystoma for experimental work in sex differentiation necessitates knowledge of the normal development of their gonads. From the work of Burns, Humphrey, and Witschi, it has become quite clear that often in male salamanders a considerable cortical development accompanies that of the medullary testicular differentiation. Such ambisexual and hermaphrodite features may be expected to have either genetical or environmental causes. Genetical differences can be studied by raising groups of individuals from different localities under identical laboratory conditions. On the other hand, physiological effects of the environment should be brought out if genetically identical lots are raised under different laboratory conditions.

Publication Date

1940

Journal Title

Proceedings of the Iowa Academy of Science

Volume

47

Issue

1

First Page

307

Last Page

327

Copyright

© Copyright 1940 by the Iowa Academy of Science, Inc.

Language

EN

File Format

application/pdf

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