The hedgehog ligans activate it
Answer:B
Chorionic Villus Sampling
Explanation:
This is a prenatal test which involves taking a chorionic sample from the Placenta for testing
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.
Use insect repellents any time you are outdoors.
Wear long-sleeved clothing.
Schedule outdoor activities to avoid the hours from dusk to dawn during peak mosquito season.
Repair damaged window and door screens.
Remove standing water from the areas around your home.
