Chicken lens crystallin DNA sequences show at least two δ-crystallin genes

Abstract
Restriction analysis of chicken DNA using probes derived from a cloned c[complementary]DNA and analysis of cloned genomic DNA fragments containing .delta.-crytallin gene sequences indicated the presence of at least 2 non-allelic genes for .delta.-crystallin, the 1st and principal crystallin synthesized in the embryonic chicken lens. EM analyses of 3 cloned genomic fragments revealed that the .delta.-crystallin mRNA gene sequences are interrupted at least 14 times in one of the .delta.-crystallin genes.
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