Answer:
the drug was pulled from the market because of the evidence that it was a(n) <u>teratogen</u>
Explanation:
Teratogens are drug or other agents that cause physical or functional bnormalities in fetuses that are exposed to such agents. A typical example is alcohol. The degree of the abnormality on the fetus depends on a number of factors which are:
- the type of agent
- the developmental stage of the fetus
- the duration of exposure
- the concentration of teratogenic agent being exposed to
Answer:
Lateral interactions between protofilaments are in general homotypic. The heterotypic interactions are weaker because these interactions involve the mix of different protofilaments within the microtubule
.
Explanation:
Microtubules are cytoskeletal polymers that are formed by tubulin dimers in a head-to-tail arrangement (protofilaments).
Answer: They aren't classified as birds because monotremes are mammals, unlike birds. They are referred to as mammals because they have mammary glands responsible for manufacturing and producing milk. Birds cannot do this.
