#Question id: 2778
#Unit 2. Cellular Organization
You are studying the regulation of a group of genes and have determined that the full activation of transcription of these genes occurs when histone acetyl transferases have made post-translational modifications specifically to which one of the following amino acids?
#Question id: 7219
#Unit 5. Developmental Biology
Following statements are regarding to the role of the Disheveled and β-catenin proteins in specifying the cells of the sea urchin embryo.
A. During normal development, β-catenin accumulates predominantly in the micromeres and somewhat less in the veg2 tier cells.
B. In embryos treated with lithium chloride, β-catenin accumulates in the nuclei of all blastula cells and the cells of the animal pole become specified as ectoderm.
C. When β-catenin is prevented from entering the nuclei (i.e., it remains in the cytoplasm), the vegetal cell fates are not specified, and the entire embryo develops as a ciliated ectodermal ball.
D. When β-catenin is prevented from entering the nuclei (i.e., it remains in the cytoplasm), the vegetal cell fates are specified, and the entire embryo specified as endoderm and mesoderm .
Which of the following statements are true?
#Question id: 2742
#Unit 2. Cellular Organization
In the beads on a string model, the bead is made up of __________
#Question id: 3412
#Unit 11. Evolution and Behavior
What will be frequency of inbreeding coefficient between G and H?
#Question id: 23789
#Unit 7. System Physiology – Animal