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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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The wall of the left ventricle is thicker than that of the right and the left ventricle pumps more blood than the right. Are the
Rus_ich [418]

The wall of the left ventricle is thicker than that of the right - True

The left ventricle pumps more blood than the right - False

<u>Explanation:</u>

Heart has 4 number of chambers. One among these chambers is the left ventricle. Among the four cambers of the heart, the thick one is the left ventricle. It appears below the left atrium. The left ventricle is present in the bottom left part of the heart. When the contraction of heart occurs the blood from the valve called mitral enters the left atrium from the left atrium.  

The left ventricle transports the oxygenated blood to the human body. The left ventricle needs along these things for pumping the blood. The right ventricle can function by itself and is more powerful than left ventricle. The right ventricle is responsible in pumping blood to the lungs on its own.

7 0
3 years ago
The only portion of a haplontic life cycle that is diploid is the .
lakkis [162]
I suppose it's a zygote. In haplontic life cycle haploid gametes fuse together creating the zygote (diploid) that promptly divides meiotically creating 4 haplontic cells serving as spores.
6 0
3 years ago
Read 2 more answers
In which environment will decomposition occur the fastest?
Anton [14]

Answer:

D. The Amazon Rainforest

Explanation:

All in all, the bacterias and mashrooms which are which have a decomposing role in nature, usually, live in humid environments like forests, so I think that the answer would be the option D.

7 0
2 years ago
How would a tubal ligation or vasectomy influence meiosis in individuals who elected to have one of these operations
taurus [48]

Vasectomy and Tubal ligation are operations that have an effect on meiosis in individuals who have elected to have these operations in that it causes meiosis to stop.

A vasectomy or Tubal ligation are operations that are often performed as a method of birth control. A vasectomy is the male version of the operation and includes a procedure that negates the gametes or sex cells from reaching the sperm and being ejected from the body, thus preventing fertilization.

Tubal ligation is a similar process performed on women. The goal of this operation is the same as in the vasectomy, to stop the "egg cell" from being released and thus preventing it from being fertilized. Both procedures have been shown to cause meiotic arrest in individuals following the operation, In some cases, meiosis resumes after some time.

To learn more visit:

brainly.com/question/7002092?referrer=searchResults

8 0
2 years ago
Correctly label the following anatomical features of a neuron. Axon Axon terminals Myelin sheath Soma Internode Nucleus Node of
Ratling [72]

A neuron is a specialized cell,  found in the brain, spinal cord and the peripheral nerves  known as the nerve cell. The structure of a neuron varies with their shape and size and it mainly depends upon their functions

<h3>what is the structure of neuron ?</h3>

Dendrites which is A branch-like structure that functions by receiving messages from other neurons and allow the transmission

Cell Body has a cell body with a nucleus, Golgi apparatus, endoplasmic reticulum, mitochondria and other components.

Axon is a tube-like structure that functions by carrying an electrical impulse from the cell body to the axon terminals

Synapse functions by permitting the entry of a neuron to move an electrical or chemical signal from one neuron to another neuron.

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6 0
1 year ago
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