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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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When a fish swims from salt water into fresh water, its cells react by:
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When a fish swims from salt water into fresh water its cells react by losing water and shrinking.​ The correct option is D.

<h3>What is fresh water?</h3>

Glaciers, lakes, reservoirs, ponds, rivers, streams, wetlands, and even groundwater contain fresh water.

These freshwater habitats cover less than 1% of the world's total surface area but are home to 10% of all known animals and up to 40% of all known fish species.

When a fish swims from salt water into fresh water its cells react by losing water and shrinking due to osmosis.​

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2 years ago
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Small mammals have lower BMR, but use more calories per kilogram than large mammals.

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3 years ago
What characteristic defines this organism as eukaryotic
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b

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What happens to the temperature of a sample of matter as it changes from a liquid to a gas?
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Which of the following is not a macromolecule?
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The correct answer is a - Lipid

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Examples of lipids include waxes, steroids, phospholipids and detergents. Lipids are generally hydrophobic and insoluble in water.



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