Use the passage to answer the question.

Central self-tolerance in the immune system arises when maturing T cells in the thymus undergo apoptosis when they bind to self-antigens. Based on this information, what would MOST likely occur as the chick immune system develops?

A)

A classical experiment studying the fate determination of stem cells in the developing embryo uses the transplantation of somites from one organism to another. In such an experiment, a scientist transplanted somites 20, 21, and 22 from the right side of the neural tube from five-day-old developing quail embryos into chick embryos. The transplantation was performed in two orientations so that the order of the somites was sometimes reversed.

20

R

T cells would recognize transplanted quall somites as foreign and rapidly divide.

T cells would recognize transplanted quail somites as foreign and undergo apoptosis.

T cells would recognize transplanted quail somites as self and rapidly divide.

T cells woula recognize transplanted quail somites as self and undergo apoptosis.

(1 point)

Chick

Quail

T cells would recognize transplanted quail somites as foreign and undergo apoptosis.