Answer:
a toxin or other foreign substance which induces an immune response in the body, especially the production of antibodies.
Explanation:
Answer:
Thymine is replaced by uracil
Answer:
The cell membrane, or in plant cells, the cell wall
Explanation:
In a plant cell the cell wall helps maintain structure, and in animal cells, the cell membrane regulates what goes in and out of the cell and acts as a structure
Anamalia, Chordata, Mammalia, Carnivora, Canidae, Canis and Canis lupus.
A) a common ancestor
Homologous structures are structures that are similar in related organisms. There is a basic pattern of bones which can be inherited from a common ancestor
