The evolution of petals through the AP3 gene is best explained by 

A. a new gene mutation.
B. the modification of an existing gene for a new function.
C. homoplastic convergence.
D. gene duplication and divergence.
E. conserved genes.


D. gene duplication and divergence.

Biology & Microbiology

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The observation that different geographical areas sometimes exhibit plant and animal communities of similar appearance, even though the individual plants and animals are not closely related, is called 

A. the fossil record. B. homology. C. convergent evolution. D. divergent evolution. E. adaptation.

Biology & Microbiology

Which gland produces/releases hormones that have the widest range of effects on the body?

a. pineal b. pituitary c. thyroid d. adrenal e. pancreas

Biology & Microbiology

What DNA modifications characterize epigenetic marks?

What will be an ideal response?

Biology & Microbiology

If ATP production is blocked, decreased transport of material across a membrane occurs. Which type of transport is affected? Choose all that apply.A) osmosisB) diffusionC) facilitated diffusionD) active transportE) endocytosis

What will be an ideal response?

Biology & Microbiology