B. Clade 1 is ancestral to all the other clades
Answer:
Conditioned response.
Explanation:
Conditioned response may be defined as a type of learned behavior used in the Pavlov experiment. This type of response mainly generated when the neutral stimulus get mixed with the strong stimulus.
The male quail can be sexually arouse by red light. The red light here acts as the conditioned response because the neutral stimulus (red light) when mixed with the unconditioned stimulus result in the presentation of the female quail and increases the response of the male quail.
Thus, the correct answer is conditioned response.
Other scientists hypothesize that organic compounds could have come to Earth w<span>hen the stars collided and the debris fell to Earth. B
HOPE THIS HELPS! ^_^</span>
Positive selection tests to see if the TCR of a T-lymphocyte can recognize and bind to an MHC molecule.
<h3>What is a T-lymphocyte?</h3>
A T-lymphocyte is a special type of immune cell that is generated inside the bone marrow.
The T-cell receptor (abbreviated as TCR) is a protein located on these immune T lymphocytes.
In conclusion, Positive selection identifies if the TCR of a T-lymphocyte can recognize and bind to an MHC molecule.
Learn more about T-lymphocytes here:
brainly.com/question/17025187
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Sea Floor Magnetism, Fossil Evidence, <span>Distribution of volcanoes and earthquakes on the globe </span>and Continental drift.
