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How does antibiotic resistance relate to evolution?

Antibiotics are used to treat various diseases and ailments by targetting the bacteria which cause said diseases. Bacteria are subject to natural selection and evolution like any other organism. Random mutat...
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Answered by Syed Hadi T. • Biology tutor
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How can two brown-eyed parents have a blue-eyed baby?

Most of our characteristics, such as eye colour, are encoded by a pair of alleles. These are different forms of the same gene, one inherited from the father and one from the mother. You can get dominant and ...
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Answered by Amber S. • Biology tutor
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How do diffusion and osmosis work?

Imagine someone sprays a deodorant from across the room, eventually it will make its way over to where you are and you can smell it. Diffusion is the spreading out of particles resulting in a net movement fr...
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Answered by Atalie S. • Biology tutor
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What do I do with the Hardy-Weinberg equation?

p 2 + 2 pq + q 2 = 1 It looks daunting at first but once you get the hang of them they can be easy marks in the exam. p is the frequency of the dominant allele in the population, and q is the frequency of th...
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Answered by Atalie S. • Biology tutor
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How is RNA different to DNA?

There are a few key points you should remember. RNA has a ribose sugar instead of a deoxyribose sugar, RNA also has uracil instead of thymine, so uracil binds to adenine. The base pairings in RNA are G-C, A-...
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Answered by Atalie S. • Biology tutor
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