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Biology

A Level

Using the Hardy Weinberg principle, calculate the frequency of the heterozygous genotype in the population if the frequency of the dominant allele p is 0.864. Express your answer as a percentage of the population.

p²+ 2pq + q²= 1.0

p + q = 1.0

1.0 - p = q

1.0 - 0.864 = 0.136

q = 0.136

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Answered by Helen C. • Biology tutor

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Explain the difference between spatial and temporal summation at a synapse.

-Spatial summation occurs when multiple presynaptic neurones together release enough neurotransmitter (e.g. acetylcholine) to exceed the threshold of the postsynaptic neurone. For exam...

Answered by Helen C. • Biology tutor

212564 Views

Differentiate between sense and antisense codons?

Sence codons are used for synthesizing mRNA and are generated as complementary strand during DNA semi-conservative replication while Antisense codons are the template used for DNA replication and can't...

Answered by HAMMED B. • Biology tutor

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What is the fluid mosaic model?

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Answered by Nick O. • Biology tutor

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How do genes affect illness?

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Answered by Nick O. • Biology tutor

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