Out of the following give choices;
a. All DNA strands
contained only the heavy nitrogen isotope.
b. Half of the DNA strands contained only the light nitrogen
isotope.
c. All DNA strands contained both heavy and light nitrogen
isotopes.
d. All DNA strands contained only the lighter nitrogen
isotope.
The answer is b. Meselson–Stahl experiment demonstrated the semi-conservative model of DNA replication.
When DNA is replicated, one strand of the new double
helix strand is the parent's strand while the other is the newly synthesized
one. This made the semiconservative model stand out over the other two, dispersive
and conservative models.
Answer:
The answer is c.
Grasses and low-growing plants will start to grow under the trees.
hope this was helpful:)
Explanation:
Sanitary landfill burial technology could help to reduce the amount of
waste going into a landfill
Explanation:
The land which is carefully designed into the top of the ground where trash is easily isolated. The main purpose of landfill is to keep It dry and care try to not come in contact with air. It is not like a compost pile.
This method is introduced by England in 1912. It is also called controlled tipping. It is about 1- or 3-meter feet. It is covered with clay.
Answer:
13
Explanation:
The atomic number for Aluminum (Al) is 13. If you have access to the periodic table, this would've taken a few seconds.
