The diagram below shows a portion of the geologic time scale. Based on the time scale, it can be concluded that

A flowering plants appeared on Earth before animals

B animals appeared on Earth before flowering plants

C flowering plants created the first oxygen molecules

D land animals created the first oxygen molecules

In cattle a single gene with two alleles determines fur color the fur can be red white or roan roan fur has both red and white hair which of the following statements is true a the allele for roan fur color is dominant over red and white fur color b the allele for red fur color is dominant over white and roan fur color c the roan and white alleles are expressed independently of the other d the red and white alleles are expressed independently of each other