What is a strategic mineral? question 3 options: a)one that is exported from the united states b)a nonmetallic resource c)one that must be imported to the united states d)one that is easily removed from the ground

In the mouse, gene a allows pigmentation to be deposited in the individual coat hairs; its allele a prevents such deposition of pigment, resulting in an albino. gene b gives agouti (wild-type fur); its allele b gives black fur. what would the expected ratio of the progeny be in a cross of a doubly heterozygous agouti mouse mated with a doubly homozygous recessive white mouse? 1 (agouti) : 1 (black) : 1 (albino) 9 (agouti) : 3 (black) : 4 (albino) 3 (agouti) : 4 (black) : 9 (albino) 1 (agouti) : 1 (black) : 2 (albino) 9 (black) : 27(albino)