Which statement best describes vestigial structures

A. All animals have them

B. They are necessary for an organisms survival

C. They contain genetic mutations

D. They may have had an important function in the past.

Which of these carries the chemical message for one trait?

How is gametogenesis different in females than in males?

Which geologic process formed the Grand Canyon?

If you have a mutation in APC, a tumor suppressor, that causes it to become overly active, what would happen? A. The cell would proliferate more quickly B. The cell would proliferate more slowly C. The cell would commit suicide (apoptosis) D.

What is structural adaptation

Deer need food and water to survive. What are food and water for the deer population? carrying capacity limiting factors population growth scarce resources

Organisms in this kingdom are single celled and prokaryotic

Why are most plants thin with a broad surface

A lab technician observes a unicellular organism with two long flagella and two nuclei in the blood smear of a person. To which phylum does this protozoan belong? A. Zooflagellata B. Ciliata C. Sarcodina

Which is an example of a chemical defense in your skin? growing long hair shredding dead skin sweating palms developing calluses