Which of the following is NOT a characteristic of a morphogen?
A. A morphogen will only elicit effects in areas where it is at a high enough concentration.
B. Morphogens are distributed asymmetrically throughout the cell.
C. Morphogens can be secreted to act on neighboring cells.
D. Morphogens can cause cell death.
E. None of these choices are incorrect, they are all characteristics of morphogens.
E. None of these choices are incorrect, they are all characteristics of morphogens.
You might also like to view...
Most homeotic genes encode _____; therefore, the protein products of these master genes are found in the _____
a. stop codons; ribosomes b. transcription factors; nucleus c. transcription factors; extracellular matrix d. splicing proteins; endoplasmic reticulum e. energy releasing proteins; mitochondria
Protection of which of the following would least protect the brain from physical trauma?
1.dura mater 2.pia mater 3.arachnoid mater 4.skull
In the ABC model of flower development in
Arabidopsis thaliana, petals form when gene(s) __________ is(are) switched on. a. A b. A and B c. B and C d. C e. A and B and C
This phylogeny shows the relationships among 53 modern humans based on mitochondrial DNA. How does this phylogeny support the out-of-Africa hypothesis?
What will be an ideal response?