#Question id: 26945
#Unit 10. Ecological Principles
If the net reproductive rate is less then 1 than it represents____
#Question id: 4114
#Unit 3. Fundamental Processes
Splice-site recognition is prone to two kinds of errors. First, splice sites can be skipped, with components bound at, for example, a given 5’ splice site pairing with those at a 3’ site beyond the correct one. Ways in which the accuracy of splice-site selection can be enhanced are as
A. The factors that recognize that site are transferred from the polymerase carboxy-terminal “tail” onto the RNA. Once in place, the 5’ splice site components are poised to interact with those other factors that bind to the next 3’ splice site to be synthesized.
B. SR (serine–arginine-rich) proteins bind to sequences called exonic splicing enhancers (ESEs) within the exons. SR proteins bound to these sites recruit the splicing machinery to the nearby splice sites to ensure correct splicing
C. By recruiting splicing factors to each side of a given exon, this process encourages the so-called “exon definition, contribute to correct splicing
D. Alternative splicing is intentional missplicing mechanism
Which of the following is INCORRECT?
#Question id: 3609
#Unit 8. Inheritance Biology
In humans, the dominance relationship between the A and B alleles of the ABO blood group gene is an example of
#Question id: 629
#Unit 1. Molecules and their Interaction Relevant to Biology
In the presence of a fixed concentration of a competitive inhibitor, which of the following would best characterize an enzyme-catalyzed reaction when the concentration of the substrate is increased?
#Question id: 5556
#Unit 5. Developmental Biology
Contact of a sea urchin egg with signal molecules on sperm causes the egg to undergo a brief ________.