The Role of Zeta and Epsilon Globins in Hemoglobin Gower

The two embryonic globins are zeta (ζ) and epsilon (ε). What are zeta and epsilon globins a component of?

1) Hemoglobin Gower

2) Hemoglobin A

3) Hemoglobin F

4) Hemoglobin S

Final answer:

Zeta (ζ) and epsilon (ε) globins are components of Hemoglobin Gower. They are part of the embryonic hemoglobin forms found in the human embryo and are essential for early oxygen transport.

Explanation:

The two embryonic globins, zeta (ζ) and epsilon (ε), are components of Hemoglobin Gower. Specifically, Hemoglobin Gower 1 (Hb Gower 1) consists of two zeta and two epsilon chains (ζ2ε2), while Hemoglobin Gower 2 (Hb Gower 2) is made up of two alpha and two epsilon chains (α2ε2). These early forms of hemoglobin are found in the human embryo. Hemoglobin itself is a large molecule made up of proteins and iron, consisting of four globin polypeptide chains, each bound to a heme group. The combination of globin and heme creates the functional protein that is essential for oxygen transport in the blood.