Which of the following is used to calculate mechanical advantage? dr/de

Fe/Fr

de/dr

Fr/Fe

Fe/Fr

Explanation:

i think

myth. it was once thought that animals, including cats and dogs, could only see in black and white. however, scientists have proven this to be a myth. in all animals, including humans, the perception of colour is determined by the presence of cells in the eye called cone photoreceptors.

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).