Which Conclusion Can Be Made from the Experiments of Hans

question 24

Multiple Choice

Which conclusion can be made from the experiments of Hans Spemann and Hilde Mangold in which they transplanted the dorsal lip of one salamander embryo to the ventral side of a second embryo?

• A) Cytoplasmic determinants of development are homogeneously distributed in the amphibian zygote.
• B) In the late blastula,certain regions of cells are destined to form epidermis or nervous tissue.
• C) The dorsal lip of the blastopore,even if isolated from other cells,can form a complete embryo.
• D) The dorsal lip of the blastopore can initiate gastrulation.
• E) The dorsal lip of the blastopore gives rise to the neural tube.

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Definitions:

Osteoclasts

Bone-resorbing cells that play a crucial role in bone remodeling and calcium homeostasis within the body.

Langerhans Cells

Specialized dendritic cells located in the epidermis that play a key role in the skin's immune response.

Keratinocytes

The primary type of cells found in the epidermis, responsible for the production of keratin.

Melanocytes

Cells located in the bottom layer of the skin's epidermis and in the eye, responsible for producing melanin, the pigment that gives skin its color.