Answer: Because other classes of antibodies do not bind to these particular Fc receptors, they cannot pass across the placenta. IgG is also secreted into the mother's milk ...
Explanation:
Before Watson and Crick presented their work, the scientific community understood that proteins and genes are interrelated and that genes may be located on chromosomes but were not able to point out genes as having locations. The role of DNA was also thought to be extremely insignificant, and it was viewed simply as a binding molecule within the cell.
Answer:D. Farmers choose which organisms they let reproduce based on the organisms' traits
<span>A. Structures developed that protecting developing eggs and sperms
[ 'cause of their protection, they get produce in very high number ]
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