Each parent contributes one allele.
The DNA base sequence carries the information a cell needs to assemble protein and RNA molecules.
c) Some species are part of the human natural flora
Explanation:
Please refer to attachment for more information. I tried to write it here, but it was showing an error.
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Answer:
Genes are made of deoxyribonucleic acid. Also known as DNA. The sides are sugar and Phosphate molecules.