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How can a child inherit a disease from their parents if neither parent has the disease?

We inherit two copies of a gene called alleles, one from each parent. The alleles we inherit from our parents can either be dominant or recessive. A dominant allele requires just one copy of the allele to be...
JT
Answered by Joanna T. • Biology tutor
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I am having trouble learning Mitosis, could you explain it for me please?

Mitosis is a form of asexual reproduction in plants. A parent cell splits into 2 identical daughter cells. There are 46 Chromosomes in each cell and each chromosome is copied exactly, using chromatids to pul...
AL
Answered by Alex L. • Biology tutor
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What are some of the major differences between viruses and bacteria?

Viruses are parasitic organisms that cannot survive outside a living host. They are considered to be non-living, however this still remains debatable amongst virologists. They infect their host and utilise i...
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Answered by Antonia E. • Biology tutor
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How does an action potential travel from one neurone to another?

The action potential arriving at the presynaptic membrane causes the voltage gated calcium ion channels on the presynaptic membrane to open. This causes an influx of calcium ions into the presynaptic neurone...
GT
Answered by Gemma T. • Biology tutor
3124 Views

Explain how Giraffes may have evolved to have long necks.

There would be variation in the length of necks in the early giraffe population. Those who had longer necks would have an advantage for survival as they would be able to reach higher into the trees to feed. ...
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Answered by Imogen B. • Biology tutor
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