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A scientist is researching the effect of an energy drink on a group of twenty men. State two characteristics of the sample which may influence the results.

So this question is looking at how characteristics of different people may affect how they respond to an energy drink. A good way to start thinking about this question is to think about what makes the people...
AB
Answered by Amy B. • Biology tutor
3093 Views

Describe the process of DNA replication in eukaryotic cells.

DNA replication occurs in the nucleus of the cell. DNA is first unwound to expose the nucleotides. This is is catalysed by DNA helicase which catalsyes the breakage of the hydrogen bonds between complimentar...
JW
Answered by Joe W. • Biology tutor
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What are the main differences between mitosis and meiosis?

Mitosis and meiosis are both examples of cell division that result in the creation of new cells. There are two main differences between these processes; firstly, meiosis involves two cell divisions and mitos...
BO
Answered by Bryonie O. • Biology tutor
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What is the difference between vertical and horizontal transmission of antibiotic resistance between bacteria?

Vertical transmission occurs during asexual reproduction. During the cell cycle, a bacterium will replicate its DNA (found in the form of a circular plasmid) which will contain the gene for antibiotic resist...
AA
Answered by Annabelle A. • Biology tutor
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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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