Need help on question 3 !!

Which units ate used to measure both velocity and speed? check all that apply

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?

You see a white marker with an orange circle and black lettering. what does this marker tell you