#Question id: 7179
#Unit 5. Developmental Biology
Blocking BMP(BMP2, BMP4, BMP7) signaling by infecting progress zone cells with retroviruses carrying dominant negative BMP receptors. Which of the following results are found?
#Question id: 7180
#Unit 5. Developmental Biology
Development
of tetrapod limb has to function in a three dimensional coordinated system:
Proximal-distal
axis by ____a_____
Anterior-posterior
axis by ___b_____
Dorsal-ventral
axis by ______c____
Which of the following combinations are correct?
#Question id: 7181
#Unit 5. Developmental Biology
Following graph represents Inhibition of L1-mediated cell adhesion by alcohol.
If L1 is mutate,
which of the following graph is correct?
#Question id: 7182
#Unit 5. Developmental Biology
Suppose a flower had normal expression of genes A and C and expression of gene B in all four whorls. Based on the ABC hypothesis, what would be the structure of that flower, starting at the outermost whorl?
#Question id: 7183
#Unit 5. Developmental Biology
Following graphs (A and B)
represents establishment
of a maternal gradient in Hunchback protein.
which of the following statements are correct according to graphs?
#Question id: 7184
#Unit 5. Developmental Biology
The figure above represents a late zebrafish gastrula. The following concepts may be proposed during further development of the embryo.
A. The concentration of FGF decreases from the yolk towards the epidermis, along with the increase of BMP activity from the dorsal to the ventral axis.
B. Increase in FGF activity in the epidermis with concomitant decrease in BMP activity towards the ventral axis.
C. Neural induction in zebrafish is independent of the organizer and depends on activation of BMP signalling.
D. In comparison, both Xenopus and chick embryos require activation of FGF for neural induction to occur in addition to BMP inhibition.
Which of the above statements are incorrect?