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Mkey [24]
3 years ago
8

Every DNA strand has an EQUAL number of adenine and thymine nucleotides in a molecule. Explain why.

Biology
1 answer:
FromTheMoon [43]3 years ago
3 0

Answer:

This is the basis for Chargaff's rule; because of their complementarity, there is as much adenine as thymine in a DNA molecule and as much guanine as cytosine. Adenine and thymine are connected by two hydrogen bonds, and cytosine and guanine are connected by three hydrogen bonds

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Answer:

A species that lives in a heterogeneous environment is more likely to exhibit phenotypic plasticity.

Explanation:

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Phenotypic plasticity needs epigenetic mechanisms to occur, which involve the genotype and the environment interaction to produce adapted phenotypic changes.

Epigenetic mechanisms produce changes in the expression of the genes, with no need to alter the DNI nucleotides sequences.

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What is the correct order of expression of the genes listed below in the determination of segmentation in Drosophila(1) Segment
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