This blog will help explain the current Edexcel IAL Biology specification by June 2018.
Sunday, August 20
1.4.13 Describe a gene as being a sequence of bases on a DNA molecule coding for a sequence of amino acids in a polypeptide chain.
- A gene is a sequence of bases on one of the strands of a DNA double helix molecule which codes for a chain of amino acids ( i.e. codes for a polypeptide chain).
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