#Question id: 7754
#Unit 5. Developmental Biology
#Question id: 5304
#Unit 11. Evolution and Behavior
Bioinformatics includes ________.
I. using computer programs to align DNA sequences
II. creating recombinant DNA from separate species
III. developing computer-based tools for genome analysis
IV. using mathematical tools to make sense of biological systems
#Question id: 11989
#Unit 10. Ecological Principles
#Question id: 1251
#Unit 4. Cell Communication and Cell Signaling
Following statements are regarding to receptor serine kinases.
A. The two serines in each Smad3 that were phosphorylated by the RI receptor kinase bind to phosphoserine-binding sites in the MH1 domains of a Smad3 or a Smad4, forming a stable complex containing two molecules of phosphorylated Smad3 (or Smad2) and one molecule of the co-Smad (Smad4).
B. The bound importin then mediates translocation of the heteromeric R-Smad/co-Smad complex into the nucleus.
C. After importin dissociates inside the nucleus, the Smad3/Smad4 (or Smad2/Smad4) complex binds to other transcription factors to activate transcription of specific target genes.
D. Transcription of the PAI-1 gene requires formation of a complex of the transcription factor TFE3 with the R-Smad/co-Smad (Smad3/Smad4) complex and binding of all these proteins to specific sequences within the regulatory region of the PAI-1 gene.
E. Within the nucleus, R-Smads are further modified by phosphorylation of their linker domains, monoubiquitinylation of their MH1 domains, acetylation of their MH2 domains, and dephosphorylation of the C-terminal serines by nuclear phosphatases.
Which of the following combination is incorrect?
#Question id: 4883
#Unit 8. Inheritance Biology
Heterozygous female selected mate to a homozygous male fruit fly with yellow body color and curved wings, four types of offspring will occur
Black body, flat wings 12.5 %
Black body, curve wing 37.5 %
Yellow body, curve wing 12.5 %
Yellow body, flat wings 37.5 %
Which of the following conclusion drawn about nature of inheritance?
A) Black body, curve wing are dominant over yellow body and flat wings.
B) F2 phenotype will not show ratio of 9:3:3:1when inter cross F1 heterozygous
C) Gene for body color and wing shape is incompletely link
D) F1 hybrid genotype having cis configuration of allele