A scientist crosses a homozygous red flower with a homozygous white flower. All of the resulting offspring are heterozygous with red flowers. Assuming that flower color is controlled by a single gene, which of the following statements is most likely true? A) The allele for red flowers is on a different chromosome than the allele for white flowers.

B) The allele for red flowers is recessive to the allele for white flowers.

C) The allele for red flowers has mutated more times than the allele for white flowers.

D) The allele for red flowers is dominant to the allele for white flowers.

Why are small quantities of chlorofluorocarbons so harmful to the ozone layer? a. the chlorofluorocarbons act like ultraviolet radiation causing large amount of ozone to be produced. b. the chlorine from the chlorofluorocarbons reacts with free molecules of oxygen causing a stop in ozone production c. free oxygen atoms can replace the chlorine in chlorine monoxide, releasing a free atom of chlorine which can then recombine with an oxygen atom in ozone, destroying more ozone. d. chlorofluorocarbons absorb ultraviolet radiation, preventing the formation of ozone select the best answer from the choices provided

With the word calcite wich completes the analogy mineral, erosion, marble, or aragonite

Acell in the human nervous system whose primary function is to form myelin and the blood-brain barrier, respond to injury, remove debris, and enhance learning and memory is called a(n) cell.