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Annette [7]
3 years ago
5

Epigenetics refers to a special kind of hereditary mechanism. Epigenetic changes do not change the DNA nucleotide sequence, yet

their effect on gene expression can last for several generations. In one surprising study, it was found that the grandsons of men who suffered a famine were less likely to die of cardiovascular disease. The experience of famine made some cardio-protective change in the sperm of those grandfathers that was passed on. What type of change was likely responsible?
Biology
1 answer:
OlgaM077 [116]3 years ago
5 0

Answer:

Histone acetylation or DNA methylation.

Explanation:

The epigenetics may be defined as the genetic phenomena that might cause mutation in the organism's genome. The DNA sequence of the organisms do not get changed in epigenetics.

This phenomena is limited whether the gene is herited from the mother ot the father. The phenomena like acetylation of histones increase the gene expression. The DNA methylation and histone deacetylation at specific residues reduces the gene expression.

Thus, the answer is histone acetylation or DNA methylation.

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What is the role of heat in the formation of new rocks?
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Answer:

Metamorphic rocks develop when heat and pressure convert an existing rock into a new rock. Contact metamorphism transpires when hot magma converts the rock that it contacts. Regional metamorphism remodels large areas of existing rocks under the enormous heat and pressure created by tectonic forces.

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Which phrase describes a feature of an earthquake’s epicenter?
Vadim26 [7]

The phrase which best describes a feature of an earthquake’s epicenter is: C. Region directly above the focus.

An earthquake refers to a sudden, natural shaking of the ground, due to series of movement within the Earth's crust and upper mantle (lithosphere) typically producing seismic waves.

An earthquake’s epicenter can be defined as the point on the surface of planet Earth, which is perpendicular to the hypocenter, directly above the focus and it typically indicates where the seismic waves from an earthquake are most intense.

On a seismic hazard map, an earthquake’s epicenter is generally located at the point where there is an intersection of the three (3) circles because earthquake are generally shallow.

In conclusion, the region which is directly above the focus is a feature of an earthquake’s epicenter.

Read more: brainly.com/question/21620194

The missing answer options are provided below:

A. Starting point of an earthquake.

B. Place around the center of an earthquake.

C. Region directly above the focus.

D. Point about 100 kilometers deep in the lithosphere.

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