Which statement is true of homo sapiens?
a. the evolved after the cro-magnons.
b. the have been earth's only hominine for the last 24,000 years.
c. they became extinct about 1 million years ago.
d. they coexisted with homo habilis for several thousand years.

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