Which Result Did Hans Spemann and Hilde Mangold, Working with Amphibian

question 66

Multiple Choice

Which result did Hans Spemann and Hilde Mangold, working with amphibian embryos, obtain?

• A) Tissue transplanted between late gastrulas developed into tissue appropriate for the location in which it was placed.
• B) Each nucleus of cells in the blastula was specific in the development it could direct.
• C) When the gray crescent was bisected, neither half of the zygote developed into an embryo.
• D) Transplantation of the dorsal lip of the blastopore from an early gastrula onto the region opposite the blastopore of another early gastrula resulted in a single embryo with two notochords.
• E) When the gray crescent was not bisected, the half of the zygote receiving it developed into a complete embryo while the half lacking it formed a clump of undifferentiated cells.

---

Definitions:

Personal Identity

The concept referring to the persistent and unique sense of oneself as a distinct, continuous entity over time.

Erikson

Identified as the theorist behind the stages of psychosocial development which outline key personality and identity developments over an individual's lifespan.

Intimacy

Intimacy signifies a close, familiar, and affectionate personal relationship with another person or group.

Ethnic Minorities

Groups within a community who share distinct cultural, linguistic, or racial traits that differ from the predominant population.