A trait with high heritability will:
A. respond quickly to artificial selection.
B. respond quickly to natural selection.
C. respond quickly to changes in the
environment.
D. respond quickly to both artificial selection
and natural selection.
E. respond quickly to artificial selection,
natural selection, and changes in the
environment.
D
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Why are microbial doubling times in nature typically longer than those obtained in the laboratory?
What will be an ideal response?
The comparison of homologous traits in living and extinct organisms is an example of ____
a. comparative morphology b. taxonomy c. historical biogeography d. paleontology e. molecular biology
You were out in the garage going through boxes when you were bitten by an a spider. You tell the doctor that the spider was tiny and black, causing the doctor to think perhaps that it was a black widow spider The doctor gives you an injection of antibody to the spider venom to give you immediate protection. The antibody is produced in horses by injecting them with small doses of the spider venom, causing the horse's immune system to make large amounts of specific antibody to the antigen. The horse serum is then purified before being given to humans.A week later, you notice a red rash spreading away from the injection spot, where the doctor gave you the anti-venom shot. A few days later, the rash has spread and swelling in also present. You have joint pain as well as sore
muscles all over your body. The lymph nodes in the armpit are swollen and painful. Going back to the doctor, he diagnoses you with A. a Staphylococcus infection related to the spider bite. B. serum sickness. C. Arthus reaction. D. a delayed type hypersensitivity mediated by cytotoxic T cells along with helper T cells. E. anaphylactic shock.
Hormones released by endocrine glands function as signal molecules
A. true B. false