What does an organism's phenotype describe?

the allele combination for a trait

the physical appearance of a trait

the number of alleles on a gene

the number of different traits inherited

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Each person began as a zygote. Explain why each person has the same genetic makeup as the zygote he or she developed from.

Tying the legs and wings of poultry against the body to make a compact unit for cooking is called

Robert places six eggs in a pot of boiling water (100°C) and six eggs in a pot with water at 80°C. He keeps the eggs in the water for ten minutes.

Which of the following cranial nerve numbers match with their names correctlt. a. Cr. N. 1 = Optic nerve b. Cr. N. 2 = vestibulocochlear nerve c. Cr. N. IV = trochlear nerve d. Cr. N. IX = trigeminal nerve e. Cr. N. Xi = hypoglossal nerve

Why does a sickle shaped red blood cell cause trouble when a normal round red blood cell doesn't?

What is the effect of sickle-cell anemia? a. Blocked respiratory pathways. b. Decreased neurological functions. c. Inefficient oxygen transportation. d. Susceptibility to contracting malaria.

You are exercising on a hot day your body temperature goes up. You begin to sweat. The sweat cools your body. The rise in your body temperature that signals start sweating is an example of: input. Output. Feedback. Process.

Arteriole blood pressure increases in response to all but which of the following? A. increasing stroke volume B. falling blood volume C. rising blood volume D. increasing heart rate E. all of these

Small islands can form during the constructive process called A) erosion. B) glaciation. C) deposition. D) weathering.

Elliptical galaxies are egg shaped galaxies without spiral arms or interstellar gas and dust. True or false