#Question id: 7208
#Unit 5. Developmental Biology
Following statements are given about cleavage in drosophila.
A. During the ninth division cycle, approximately five nuclei reach the surface of the anterior pole of the embryo. These nuclei become enclosed by cell membranes and generate the pole cells that give rise to the gametes of the adult.
B. During tenth division of cycle, the other nuclei migrate to the cortex (periphery) of the egg and at this stage, embryo is called a syncytial blastoderm .
C. When the nuclei reach the periphery of the egg during the tenth cleavage cycle, each nucleus becomes surrounded by microtubules and microfilaments. The nuclei and their associated cytoplasmic islands are called transmembrane.
D. Following division cycle 13, the cell membrane (which had covered the egg) folds inward between the nuclei, eventually partitioning off each energid into a single cell. This process creates the cellular blastoderm.
Which of the following combination are correct?
#Question id: 3436
#Unit 11. Evolution and Behavior
Loss of responsiveness to stimuli that convey little or no new information is called
#Question id: 10632
#Unit 10. Ecological Principles
Three different population growth pattern related to population density are shown in figure
#Question id: 861
#Unit 1. Molecules and their Interaction Relevant to Biology
Alexander Varshavsky discovered, the half-lives of many cytoplasmic proteins vary with the identities of their N-terminal residues via the so-called N-end rule:-
|
A. Destabilizing N-terminal residues Asp, Arg, Leu, Lys, and Phe have half-lives of |
i. Only 2 to 3 minutes, |
|
B. Stabilizing N-terminal residues Ala, Gly, Met, Ser, Thr, and Val have half-lives of |
ii. >10 hours in prokaryotes iii. >20 hours in eukaryotes. |
#Question id: 3975
#Unit 3. Fundamental Processes
Which of the following is not a structural motif found in a DNA-binding domain?