Amutation that prevents the catabolite activator protein (cap) from binding to the lac operon promoter will result in

How do you transfer mrna into codons ? i'm so confused : (

How does a lytic infection differ from a lysogenic infection?

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?