Two zebra fish "pink" mutants, pink-s and pink-w, lack the dark pigment stripes, are recessive and each displays an f2 3: 1 segregation pattern in crosses to the wild type. crosses between the pink-s and pink-w yield a pink f1. does this cross indicate that pink-s and pink-t are complimentary? how many genes are involved? the f1 resulting from hybridizing pink-s and pink-w is selfed. what do you expect the following f2 ratio of wildtype: pink to be?

Athin nonconducting rod with a uniform distribution of positive charge q is bent into a circle of radius r. the central perpendicular axis through the ring is a z-axis, with the origin at the center of the ring. a) what is the magnitude of the electric field due to the rod at z = 0? n/c (b) what is the magnitude of the electric field due to the rod at z = infinity? n/c (c) in terms of r, at what positive value of z is that magnitude maximum? r (d) if r = 4.00 cm and q = 9.00 µc, what is the maximum magnitude? n/c