Which of the following is not true about the Notch gene in Drosophila?

Q. Which of the following is not true about the Notch gene in Drosophila?

A.            Notch is lethal in homozygous form

B.            Notch is recessive to Facet

C.            It causes a special indentation of the wing margin

D.            It is expressed in heterozygous form

Answer: Notch is recessive to Facet