A pure dark gray bottlenose dolphin is crossed with a pure black bottlenose dolphin. All of the offspring are dark gray. What does that mean? (3a) Question 3 options:

A.The gene for black color is dominant over the gene for dark gray color.

B. Black is more common than dark gray.

C. Dark gray and black are equally expressed.

D. The gene for dark gray color is dominant over the gene for black color.

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Explanation:

These greenhouse gases coupled with the destruction of the world's rain forests have created a slow but steady increase in atmospheric carbon dioxide levels. This increase may have an adverse effect on life on Earth. Burning fossil fuels releases carbon dioxide into the atmosphere. In order to remove these dangerous levels of carbon dioxide from the air, we rely on green plants to use carbon dioxide in photosynthesis. This process produces food for the plants and other organisms and at the same time releases oxygen. Without plants, our lives would not be possible.