Multiple Choice
In the 1920s, two German embryologists, Hans Spemann and Hilde Mangold, demonstrated that a small patch of cells, called the dorsal lip of the blastopore, would
A) induce the surrounding cells to differentiate.
B) form the chorion.
C) become the digestive tract.
D) become the neural tube.
E) lack the genes necessary to develop the embryo.
Correct Answer:
Verified
Correct Answer:
Verified
Q10: In a bird egg, the_ provides the
Q11: The cells of an aging animal function
Q12: The metamorphosis of a caterpillar into a
Q13: The nervous system develops from the endoderm.
Q14: The placental blood vessels<br>A) manufacture hormones that
Q16: In humans, fertilization occurs in the<br>A) uterus.<br>B)
Q17: Which of the following is the result
Q18: The outer cell layer of the blastocyst
Q19: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB1444/.jpg" alt=" -Metabolic wastes may
Q20: At 10 weeks, the blastocyst becomes an