<span>There are a small number of boys who, after possibly contracting mumps, could experienced decreased fertility in the future. Giving a mumps vaccine, since it's a weaker version of the virus, will allow the body to fight it off without the negative effects that could come with a full version of the illness.</span>
Answer:
The correct option is C: antigen-binding sites
Explanation:
The antibody is shaped much like the letter Y in the English alphabet. It has two antigen binding sites that are identical in nature. The specificity of these sites is determined by the amino acid sequence that makes it up. Antibodies are complementary to these antigen binding sites, and the antibodies have an incredible ability to recognize a great variety of antigens.
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The overall concept a clad organ aims to prove is evolutionary relationships among each organism.
Answer:
AAATT - TTTAA
CGCAT - GCGTA
GGGAC - CCCTG
ACGGT - TGCCA
Explanation:
In DNA, A and T, also known as adenine and thymine pair together and G and C, also known as guanine and cytosine pair together due to the hydrogen bonds formed between the two bases.
Veins contain valves that ensure blood flows in only one direction. Valves also help blood travel back to the heart against the force of gravity.
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