Explanation:
Identical twins may have less in common than they think. A study now shows that the expression of their genes gets more and more different with age.
The findings could help to explain why one twin may develop a genetically influenced disease, such as diabetes, while the other remains perfectly healthy.
Identical twins have identical genes, because they are born of an embryo that splits at a very early stage in development. Such twins are often indistinguishable in outward appearance. But over the course of time they may experience radically dissimilar health.
Most scientists have assumed that environmental and lifestyle differences cause such divergence. These things trigger chemical reactions that affect our DNA and the proteins entwined with our DNA, called histones. One such reaction, known as methylation, influences the expression of genes and so can have an impact on health.
The answer to number 14 is earth worms
Answer:
usually once a month
Explanation:
The full moon is the lunar phase when the Moon appears fully illuminated from Earth's perspective. This occurs when Earth is located between the Sun and the Moon (more exactly, when the ecliptic longitudes of the Sun and Moon differ by 180°).
Answer:
C)Fungi
Explanation:
Domain Eukarya is made up of eukaryotes/ multicellular organisms. The following organisms are all prokaryotes/unicellular, so fungi is the answer.
A phosphate group is a functional group that typically has a negative charge at the pH of the cell.
- Phosphate groups contain a negative charge at physiological cell pH.
- DNA nucleotides are composed of a phosphate group, thereby exhibiting a negative charge.
- The phosphate group is also fundamental in Adenosine triphosphate or ATP (the energy coin of the cell).
In conclusion, a phosphate group is a functional group that typically has a negative charge at the pH of the cell.
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