Answer:
Option C
Explanation:
Given ,
A1 allele is carried by
% people
Let us assume A1 s dominant genotype
This means 
Thus, frequency of allele in the given population is 
It is also given that the population is in Hardy-Weinberg equilibrium thus

Frequency of fruit fly with genotype A2A2 will be

As per Hardy-Weinberg's second equation of equilibrium

Hence, option C is correct
Answer: Mixture
Explanation:
If there is and unstable element composition of say, pure graphite an un-pure gold then a chemical reaction will most likely be used to separate the two elements.
Answer:
Nitrogen
Explanation:
It can change in the Atmosphere or on land:)!
Answer:
The correct answer is - it is essential to produce red blood cell and development of the spinal cord and brain.
Explanation:
Folic acid is natural form of vitamin B9 which is essential for producing red blood cells therefore the level of this vitamin should be in proper amount as in fetuses it is crucial for the various organs to develop,
The neural tube, spinal cord, and brain growth requires appropriate amount of folic acid in pregnant women. Low level of this vitamin can leads to the risk of various disease in baby
Thus, the correct answer is -it is it is essential to produce red blood cell and development of the spinal cord and brain.
When a cell transcribes a viral gene, the viral genetic information becomes into a viral protein. these viruses are made up of nucleic acid, protein, and some lipids. These are the viruses that attack specific cells, however, the body's antibodies are there to protect.