#Question id: 7110
#Unit 5. Developmental Biology
What may be the molecular trigger that causes cells in the presomitic mesoderm to finally condense into somites?
#Question id: 7111
#Unit 5. Developmental Biology
Hox genes:
#Question id: 7112
#Unit 5. Developmental Biology
Although the vertebrate body plan outwardly displays a mirror-image symmetry with regard to left and right, the internal organs are not symmetrical. How does this left-right asymmetry develop?
#Question id: 7113
#Unit 5. Developmental Biology
In flies, frogs, and chicks, gradients of morphogens determine the future antero-posterior and dorso-ventral axes of the developing embryo. How is the antero-posterior axis determined in C. elegans?
#Question id: 7114
#Unit 5. Developmental Biology
What are the lin-4 and lin-14 genes of C. elegans?
#Question id: 7115
#Unit 5. Developmental Biology
The ability of the sea urchin embryo to regulate its development illustrates the fact that there are maternally-determined differences along the animal-vegetal axis that are necessary for normal development. Which of the following statements about regulation in sea urchin embryos is consistent with that fact?