Answer:
DNA does not usually exist as a single strand, but instead as a pair of strands that are held tightly together. These two long strands coil around each other, in the shape of a double helix.
"A section of DNA that usually contains the code for a specific protein that determines a specific trait is a gene, while an allele is a section of a gene" is the statement that <span>best describes the difference between a gene and an allele. The correct option among all the options given in the question is option "A".</span>
Answer:
A mixture
Explanation:
The elements of a mixture combine physically, yet there is no chemical reaction
Answer:
Convection only occurs in liquids and gases. For example: Air and ocean