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How can I find the frequency of genotype Bb in a population given that the frequency of BB is 0.49? (Where B = dominant allele, b = recessive allele on the same gene).

The proportion of the population with genotype Bb can be calculated using the two equations of the Hardy-Weinberg principle. These equations are: p + q = 1 where: p = frequency of the dominant allele (B) q =...
CA
Answered by Caitlin A. • Biology tutor
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Why do enzymes stop working at high temperatures?

Enzymes are biological catalysts. This means they spead up chemical reactions in the body. To understand why they might stop working, you must first look at the structure. Enzymes are proteins made up of pri...
CM
Answered by Caitlin M. • Biology tutor
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Using the nitrogen cycle, explain how nitrogen from the atmosphere is converted into nitrates

4 main processes: ammonification nitrification nitrogen fixation denitrification NITROGEN FIXATION: the process by which N2 gas converted --> nitrogen containing compounds (e.g. Ammonia) the most importan...
NZ
Answered by Nawal Z. • Biology tutor
7586 Views

How is blood in the veins returned to the heart?

This question requires understanding about how blood flows in the veins. The body contains three types of blood vessel: artery, vein and capillaries, each with different characteristics. Veins carry deoxygen...
GB
Answered by Grace B. • Biology tutor
14621 Views

The events that take place during interphase and mitosis lead to the production of two genetically identical cells. Explain how.

During the S phase of interphase, the DNA is replicated in a semi-conservative manner. The parent strands are seperated and each one is then used to synthesise a new daughter strand through the addition of c...
CS
Answered by Conor S. • Biology tutor
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