The inheritance of gene expression patterns, in the absence of the initiating signal, is called Epigenetic regulation.
Epigenetic changes can be defined as inherited variations which are not present in the DNA sequence. Gene expression is regulated at different levels and not merely in response to DNA modifications. Examples of epigenetic control include DNA methylation, histone deacetylation and mi-RNA expression.
Epigenetic mechanisms add an adaptive layer of control in the regulation of gene expression that allows an organism to adapt to a dynamic environment.
Epigenetic regulation increases the functional intricacy of deoxyribonucleic acid (DNA) by changing chromatin structure, nuclear organization as well as transcript stability.
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Answer:
The correct answer is option B. maculae/ static equilibrium.
Explanation:
Maculae are mechanoreceptors present inside the saccule and utricle specialized for the static equilibrium detecting. Maculae use hair cells to find out the movements of the otolithic membrane occurs, which is the surrounding membrane of the macula.
The sense of the position of the head to determine the stability and posture is static equilibrium and it is determined by the maculae.
Thus, the correct answer is option- B. maculae/ static equilibrium.
<span>a. They have homologous structures because they have a common ancestor.
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Any animal that has alot of thick fur can produce cashmere wool.