Biology 11th Edition by Cecie Starr ,Ralph Taggart

تمرين 2

Watermelons ( Citrullus ) are important crops around the world. A single gene determines the density of green pigment that colors the rind, with solid light green ( g ) recessive to solid dark green ( G ). When a true-breeding plant having a dark-green rind is crossed with a plant having a light-green rind, what fraction of the dark-green offspring is expected to be heterozygous for this trait