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What is the difference beween biological species concept and the phylogentic approach to defining species?

The biological species concept classifies species as a group of actually or potentially interbreeding individuals. This means that any two individuals (well a male and female) within the group could breed an...
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Answered by Harriet H. • Biology tutor
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Explain how the eye responds to different light levels.

Light is a sensory stimulus detected by the eye. Rods and cones located in the retina of the eye respond to light. The pupillary reflex is responsible for controlling the amount of light hitting the retina. ...
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Answered by Dominic S. • Biology tutor
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What are receptors?

They are a group of specialised cells that respond to different changes in the environment called stimuli. Different types of receptors have different stimuli they react to such as light, sound, chemicals an...
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Answered by Emily O. • Biology tutor
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How are animals cloned?

Firstly what is cloning? Cloning is used to produce individuals that are genetically identical to their parents. To clone animals embryos are used. The nucleus of an adult cell (such as a skin cell) is place...
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Answered by Olivia O. • Biology tutor
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What is the difference between an endocrine and exocrine gland?

An endocrine gland secretes its products, for example hormones, directly into the blood. An example of an endocrine gland is the adrenal gland which secretes adenaline made in the adrenal medulla directly in...
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Answered by Maddalena C. • Biology tutor
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