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What is Linkage?

Linkage occurs when the genes for two different characteristics are found on the same chromosome. This means that they do not independently assort during metaphase one of meiosis and so pass into gametes tog...
MG
Answered by Megan G. • Biology tutor
32820 Views

Explain how the lungs are adapted for gaseous exchange.

The lungs are made up of tiny sacs called alveoli which presents a very large surface area for gaseous exchange. The lungs are well supplied with blood due to lots of capillaries covering the alveoli, consta...
JT
Answered by Jonathan T. • Biology tutor
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Garlic contains a chemical called Allicin which has antimicrobial properties. Describe how this could have occurred through natural selection.

Allicin has antimicrobial properties and can therefore protect garlic from fungal and bacterial infections and is coded for in the DNA of the garlic by an allele. The presence could have been the result of w...
LC
Answered by Lorenzo C. • Biology tutor
7145 Views

What are the modes of genetic inheritance?

Genetic conditions can be passed on from parent to offspring in a number of different 'patterns;' these are the modes of inheritance. In autosomal dominant conditions, only one mutated copy of the gene is re...
AY
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How does the human body regulate its blood glucose levels?

Once a person has eaten a meal, their digestive system will break the nutrients down into smaller components that can travel in the blood to any parts of the body that need them. Any carbohydrates in this fo...
HB
Answered by Harry B. • Biology tutor
50084 Views