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What exactly is Natural selection?

Natural selection is the concept that individuals in a population that are best adapted to their environment are most likely to survive and succeed to breed and produce offspring. In turn, the offspring will...
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Answered by Joel K. • Biology tutor
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What is meant by the term mutation?

It is a random and spontaneous change to DNA that can be inherited. Most mutations have no effect on the phenotype, however some have a small effect and rarely do some have a significant effect.
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Answered by Sebastian S. • Biology tutor
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Describe the process of transcription

Transcription is the first step in gene expression that copies a DNA molecule into an RNA molecule (transcript). Such RNA molecules can either be mRNAs, if the gene that is transcribed is protein coding, or ...
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Answered by Marija P. • Biology tutor
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Describe how you would test for the presence of glucose in fruits

firstly, macerate the fruit and add a few drops of clear blue Benedict's solution place in a hot waterbath to heat mixture for 5 minutesif glucose is present, the solution will turn from blue to a brick red ...
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Answered by Sinchana L. • Biology tutor
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Give two similarities and two differences between the structure of starch and cellulose polysaccharides (4 marks).

Similarities (up to 2 marks, 1 mark each): Both linked by glucose monomers. Monosaccharides are linked by 1,4 glycosidic bonds. Monosaccharides are joined together via condensation reactions. Both polysaccha...
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Answered by Jacob D. • Biology tutor
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