Top answers

Biology
A Level

A guanine is swapped for a thymine in a gene sequence. Explain how this may alter the function of the protein it translates.

The alteration in the nucleotide sequence of the gene may result in a change in the amino acid sequence of the protein during translation. Each set of three RNA nucleotides (anticodon) is recognised by...

MD
Answered by Matthew D. Biology tutor
3776 Views

Compare and contrast the similarities and differences between meiosis and mitosis.

Both are forms of cell division.Both are used during gametogenesis (formation of gametes or sex cells such as spermatozoa and oocytes).Only mitosis is used during cell division of somatic or body cells.Me...

SP
Answered by Sally P. Biology tutor
36519 Views

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 form...

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Answered by Ava D. Biology tutor
4054 Views

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: '...

AG
Answered by Abigail G. Biology tutor
4495 Views

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 c...

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Answered by Danielle W. Biology tutor
17380 Views

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