. In the Drosophila ovary, which of the following proteins is responsible for creating and maintaining the niche for germ-line stem cells?a. Hedgehogb. FGFc. Armd. Ptc
A: a
B: b
C: c
D: d
A: a
B: b
C: c
D: d
举一反三
- In the Drosophila ovary,<br/>which of the following proteins is secreted from the cap cell and is<br/>responsible for creating and maintaining the niche for germ-line stem<br/>cells______? A: Hedgehog B: FGF C: Arm D: Ptc
- Which of the following is a germ cell? A: cells of the gonads B: intestinal cells C: sperm and eggs D: zygotes
- Which of the following cell types is glioma derived from? A: Astrocytes B: Oligodendrocytes C: Neural stem cells D: Any of the above
- which cell can only exit in small intestine: A: endocrine cells B: stem cells C: goblet cells D: Paneth cells E: absorptive cells
- Which of the following is the correct name of this specimen?[img=743x564]1803c38dd31ae7c.jpg[/img] A: Ovary cystadenoma B: Ovary cancer C: Ovary papilloma D: Ovary polyp