Avaccine works to protect a mammal from a specific virus by having the mammal's body produce antibodies. the actual vaccine contains. a. viral proteins. b. viral antibodies c. strong forms of the virus. d. weakened forms of the virus.

Guinea pig coat color is determined by a single gene. the allele for black coat color is dominant to brown. in a cross between twoblack-haired guinea pigs, 20 offspring are born. if both parents were heterozygous, probability would predict that approximately howmany of the 20 offspring would have brown hair?