The field of epigenetics deals with changes in organisms due to changes in gene expression rather than changes in the genetic code.
Answer:
Addition of a(n) methyl group to certain lysine residues of a histone protein makes the region of chromatin transcriptionally silent; addition of a(n) acetyl group to certain lysine residues makes the region of chromatin transcriptionally active.
Explanation:
The changes suffered in the expression and activity of the genes are studied by the Epigenetics.
Answer:
Proper circulation is key for maintaining optimal health. It ensures that blood and oxygen continuously flow throughout the body, allowing every organ to function properly. It helps to heal wounds faster, it keeps your brain sharp, it keeps your heart healthy, and it even gives your complexion a natural flush.
Explanation:
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Answer:
(E) Soil disturbances can result in fewer blooms, and hence lower seed production.
Explanation:
According to the experiment, the eight control plots were left undisturbed, that is, their soil was not exposed to any disturbance. On the other hand, the soil of the experimental plots was disturbed during the removal of dandelion species. This disturbance might have resulted in reduced flowering in the experimental plots due to many reasons such as removal of fertile topsoil.
The reduced flowering in these plots might have caused lower seed set. The control groups had undisturbed soil which in turn favored more flowering and seed production than in the experimental groups.
The role of the circulatory system in the process of cellular respiration is transportation of oxygen for provision of energy to the cell<span />