Some of the "Branches" of a Phylogenetic Tree Do Not

question 51

Multiple Choice

Some of the "branches" of a phylogenetic tree do not extend to the end.What do these lines represent?

• A)Extinct species
• B)Species of unknown origin
• C)Convergent species
• D)Lineages that have not changed

---

Definitions:

Marginal Cost

The climb in cumulative cost associated with the crafting of one more unit of a product or service.

Pumpkins

A type of winter squash, commonly orange in color when ripe and used for food, as well as for decorative purposes such as Halloween jack-o'-lanterns.

Constant Marginal Cost

The scenario where the cost to produce one additional unit of a product or service remains the same regardless of the quantity produced.

Marginal Costs

The excess cost involved in producing one more unit of a good or service.