#Question id: 6997
#Unit 5. Developmental Biology
Hans Spemann and colleagues developed the concept of the "organizer" in amphibian embryos while studying the ________.
#Question id: 6998
#Unit 5. Developmental Biology
Which of the following is an adult organism that has fewer than 1,000 cells?
#Question id: 6999
#Unit 5. Developmental Biology
The developmental precursors to the gonadal tissues of Caenorhabditis elegans uniquely contain ________.
#Question id: 7000
#Unit 5. Developmental Biology
One primary factor in shaping the polarity of the body axes in chick embryos is ________.
#Question id: 7001
#Unit 5. Developmental Biology
If the apical ectodermal ridge is surgically removed from an embryo, it will lose ________.
#Question id: 7002
#Unit 5. Developmental Biology
The nematode Caenorhabditis elegans ________.