Refer to the Figure Showing Fertilization in an Amphibian Egg

question 148

Multiple Choice

Refer to the figure showing fertilization in an amphibian egg. Predict where the gray crescent will form and what region of the embryo this will mark.

• A) It will form at point "a" and mark the dorsal region.
• B) It will form at point "b" and mark the ventral region.
• C) It will form at point "c" and mark the dorsal region.
• D) It will form at point "d" and mark the ventral region.
• E) It will form at point "a" and mark the ventral region.

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Definitions:

IgA

An antibody essential to the immune function of mucosal surfaces.

Saliva and Tears

Bodily fluids produced by salivary and lacrimal glands, respectively, playing roles in digestion, oral health, and eye lubrication.

IgD

A class of antibodies that plays a role in the activation of immune cells and is found in small amounts in the blood.

IgG

IgG (Immunoglobulin G) is the most common type of antibody found in blood circulation, crucial for immune defense against pathogens.