In D. melanogaster, cherub wings (ch), black body (b), and cinnabar eyes (cn) result from recessive alleles that are all located on chromosome 2. A homozygous wild-type fly was mated with a cherub, black, cinnabar fly, and the resulting F, females were test-crossed with cherub, black, cinnabar males. The following progeny were produced by the testcross: ch b* сп 105 ch* b* cn* 750 ch* 40 cn ch* b+ сп 4 ch cn 753 ch b+ cn* 41 ch* cn* 102 ch сп Total 1800

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Genome annotation

The technique of linking biological information to genome sequences is termed genome annotation. Gene annotation is the method of identifying gene locations and coding sections. It helps us understand what these genes are doing in the body through establishing structural characteristics and linking them to the actions of various proteins.