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What are the main differences between Mitosis and Meiosis?

Mitosis: One division occurs, two identical cells are formed, occurs in body cells involved in growth and repair. Meiosis: Two divisions occur, four cells with genetic variation are formed, occurs in the for...
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Answered by Ava D. • Biology tutor
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What is the definition of a species?

Scientists have come up with many different definitions of a species over the years; reproductive isolation being key to all concepts. However the most widely accepted is the biological species concept: 'Spe...
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Answered by Abigail G. • Biology tutor
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What are the events that lead to genetic variation in gametes?

Sources of genetic variation consist of random fertilisation and mutation. Mutation is a product of mistakes made during DNA replication. There are two main types of mutation; point gene mutation and chromos...
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Answered by Danielle W. • Biology tutor
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In the field of genetics what does the term "mutation" describe?

A mutation is a change in the sequence of nucleotides that make up DNA. This can be caused by a range of internal and external factors. Mutations within the coding region of genes can lead to changes in the ...
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Answered by James B. • Biology tutor
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What is the key difference between the rough endoplasmic reticulum (RER), and smooth endoplasmic reticulum (SER)?

The RER is associated with translation of proteins, including protein folding. It is known as 'rough' because it is has ribosomes immersed in it, which makes it easy to remember the protein function. The SER...
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Answered by Ivan S. • Biology tutor
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