#Question id: 1864
#Unit 4. Cell Communication and Cell Signaling
What is the approximate percentage of cases of severe combined immunodeficiency (SCID) due to defects in the Armetis gene?
#Question id: 7120
#Unit 5. Developmental Biology
Which of the following is the only true statement regarding compaction in the mouse embryo?
#Question id: 3993
#Unit 3. Fundamental Processes
An example of coordinate control is the down-regulation of ribosomal RNA synthesis in response to amino acid starvation, which will cause synthesis of ribosomal proteins to be limited. What is the correct order of the following events that participate in the signaling process?
1. Binding of stringent factor to the ribosome.
2. Formation of the unusual nucleotide ppGpp.
3. Formation of the unusual nucleotide pppGpp.
4. Uncharged tRNA binds in the ribosomal A-site.
#Question id: 3556
#Unit 8. Inheritance Biology
Flower color in plant follows incomplete dominance. Cross between AA and aa results all F1 offspring are uniform were allowed to cross with AA genotype. What will be phenotype ratio?
#Question id: 11473
#Unit 7. System Physiology – Animal
Lateral inhibition via horizontal cells in the mammalian retina ________.