Abstract
The results of a genetic analysis of lactic acid dehydrogenase (LDH) isozyme patterns in the migratory grasshopper, Melanoplus sanguinipes (F.) (Acrididae: Orthoptera), are reported. Reciprocal crosses between individuals having electrophoretically (single banded) fast and slow forms of LDH produce hybrids which show five electrophoretic bands. Presumably, the enzyme in this insect is a tetramer. Standard intercrosses and backcrosses reveal that LDH is inherited as a single autosomal gene with codominant slow and fast alleles. Two-point test crosses involving the marker, tibia color, give data suggestive of either independent assortment or loose linkage.
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