Graphically,the Graduated Model of Speciation Can Be Described as Appearing

question 16

Multiple Choice

Graphically,the graduated model of speciation can be described as appearing as a ______.

• A) Y
• B) W
• C) horizontal line with vertical branches
• D) vertical line with horizontal branches

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Definitions:

Ectoderm

The outermost layer of cells or tissue of an embryo in early development, giving rise to the outer layer of skin, brain, and nervous system.

Embryonic Development

The process by which the embryo is formed and develops, beginning with fertilization and ending at birth or hatching.

Organogenesis

The process of organ formation.

Blastula

An early stage of embryonic development in animals, characterized by a spherical layer of cells (the blastoderm) surrounding a fluid-filled cavity (the blastocoel).