Which trait is most likely to be acted on by natural selection?

A.

the knowledge that a person learns in school

B

the tricks a dog knows how to perform

C

the length of bird's beak

D

the size of a weightlifter's arm muscles

Darwin theorized that evidence for the evolution of new species can be found in homologous body structures. Which observation supports this theory? A.

11. In what biome will you find sparrows, deer, squirrels, and mice? a) Deciduous Forest b) Rainforest c) Tundra d) Grassland

Nature selection relate to the susceptibility of disease?

Name the irregular ridges of muscle lining the ventricles.

Which is a negative consequence of using DNA technology in forensics?

A 17 yr. old boy was on a weekend camping trip, was taken to a local emergency department 3 days after he returned.

To be useful in a science, a hypothesis must be ...

What part of the brain controls emotions?

What is the most important genetic factor influencing whether someone will develop osteoporosis? A. Age B. Exercise C. Gender D. Diet

Which of the following is a disadvantage of sexual reproduction? A. Most species that reproduce sexually are unable to adapt. B. Most species that reproduce sexually require a mate. C. Most sexually-reproducing organisms reproduce too quickly. D.