0
Does directional selection only occur in response to naturally occurring events?
Wiki User
∙ 11y ago
Directional selection can be used by artificial means as well. This can be seen is "pure bred" cats, dogs, horses and many others.
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
What is meant by Directional and Non-Directional Stimuli?
Directional stimuli are environmental stimuli, particularly light and sound, that the direction of which it comes and the direction of the response to the stimulus are of upmost importance. Non-directional stimuli are those where receptors do not detect the direction from which they come. Chemical stimuli are usually not directional.
Describe the difference between a response and a tropism?
There is a slight difference between a response and a tropism. Response is simply any form of reaction to simulation while tropism refers to the directional movement response in plants.
Darwin's theory of natural selection is often misinterpreted It is based on the need for survival in response to one's surroundings Which sentence best explains natural selection?
The answer lies within
What is clonal selection theory?
Te most important advance towards our understanding of the cellular basis of antibody response was provided by the clone selection theory by Mac Farlane Burnet in 1957.
Learning that makes a reflex response to a stimulus other than the original natural stimulus that naturally produces the reflex?
classical conditioning
What is a directional plant response?
a nastic response. if it helps its the only coice that has response on it.
What is agonsit?
An agonist is a chemical that binds to a receptor of a cell and triggers a response by the cell. An agonist often mimics the action of a naturally occurring substance.
What is meant by Directional and Non-Directional Stimuli?
Directional stimuli are environmental stimuli, particularly light and sound, that the direction of which it comes and the direction of the response to the stimulus are of upmost importance. Non-directional stimuli are those where receptors do not detect the direction from which they come. Chemical stimuli are usually not directional.
What is a naturally occurring reaction to a particular stimulus?
The reaction to a stimulus is called a response. An intensified stimulus usually evokes a more intense response. Of course the type of response to a stimulus depends on the nature of the stimulus. Scream at someone and they likely will feel verbally attacked. The screaming is the stimulus, feeling attacked is the response.
What causes thigmotropism?
It is the directional response of a plant organ to physical contact with a solid object.
Difference between nastic movement tropic movement?
Nastic response occur in a part of a plant that grows towards a non-directional stimulus while Tropic response occur in a part of a plant that grows towards or away from a directional stimulus.
Describe the difference between a response and a tropism?
There is a slight difference between a response and a tropism. Response is simply any form of reaction to simulation while tropism refers to the directional movement response in plants.
How can you build pressure controller by fast response directional valves?
Super glue and duct tape.
What are the causes of non-sampling errors?
non response, in accurate response and selection bias
What is a natural occurring stimulus that leads to an involuntary response?
stimulus discrimination
What is a responsive movement of a plant that is not dependent on the direction of the stimulus is called?
A responsive movement of a plant that is not dependent on the direction of the stimulus is called a non-directional or non-tropic movement. Examples of non-directional movements in plants include thigmonasty (response to touch), nastic movements (response to changes in environmental conditions), and nyctinasty (response to changes in light).
What occurs naturally and predictably without training?
An instinctive response.
