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During sampling, discuss the principles and strategies that should be employed in the collection of representative samples.

First it is important to define a representative sample. A representative sample should have a mean very close to the entire population being sampled, i.e. you are able to account for the natural variation o...
RS
Answered by Rowan S. • Biology tutor
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Why will antibiotics not cure the flu? Why should they not be overused?

The Flu is caused by the Rhinovirus. Antibiotics can only kill bacteria not viruses as viruses have different machinery to survive and replicate. Antibiotics have nothing to target in Viruses. Overuse of ant...
Answered by • Biology tutor
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List and briefly explain the two main mechanisms by which mammalian genes can be exchanged or 'translocated' between chromosomes. What are the importance of these types of recombination? (8 marks)

i. Homologous Recombination. A conservative, error-free DNA replication pathway that mainly allows for the repair of DNA under duress and also for the resetting of replication forks. The pathway is regulated...
BA
Answered by Benjamin A. • Biology tutor
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Describe the stages of mitosis.

ProphaseFirst, the chromosomes condense down which consists of sister chromatids.2. MetaphaseThen, each chromosome lines itself up at the equator of the cell in their homologous pairs.3. AnaphaseIn this stag...
Answered by • Biology tutor
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Describe how allopatric speciation occurs.

In a population of a species a barrier forms (for example the formation of a new river, or the division between two islands). This leads to two isolated groups of the original species. In the two isolated gr...
AP
Answered by Amelia P. • Biology tutor
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