What Was the Experimental Focus of the Preliminary Genetic Screening

Multiple Choice

What was the experimental focus of the preliminary genetic screening performed by Nüsslein- Volhard and Wieschaus?

A) to discover the bicoid gene
B) to generate two- tailed fruit- fly embryos
C) to identify fruit flies with mutations in genes that control fruit- fly development
D) to evaluate the mutagenic properties of varied treatments