What are the vascular tissues of a plant and what materials does each move?

Agroup of organisms that changes over time is said to

In what ways does the study of human population differ from the study of wildlife ecology

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