#Question id: 12340
#Unit 10. Ecological Principles
#Question id: 7766
#Unit 5. Developmental Biology
The relationship between shortened telomeres and stem cell
depletion has been seen in degenerative diseases such as mouse muscular
dystrophy,
I) When____ is activated by damaged telomeres, DNA replication halts, and if the repair doesn’t work, apoptosis is initiated. If the cell is a stem cell or some other rapidly replicating cell, this will reduce the numbers of cells produced, and the lack of stem cells will produce an “aged” phenotype.
#Question id: 26513
#Unit 3. Fundamental Processes
#Question id: 3822
#Unit 3. Fundamental Processes
State whether the following statements is true/false regarding DNA replication.
1. Proteins bind to both origin sites and termination sites on DNA during DNA replication.
2. In the Sanger method for DNA sequencing, the gels are read from bottom to top, since the smallest fragments travel farthest in the sequencing gel.
3. DNA polymerase I which is inhibited by dideoxynucleoside triphosphates is used in the Sanger method for DNA sequencing.
4. Sanger DNA sequencing requires inhibition of DNA polymerization by a specific dideoxynucleoside every time it is copied in the replication process.
5. The Klenow fragment can be used for DNA sequencing if proteins such as SSB protein are added.
#Question id: 26787
#Unit 8. Inheritance Biology
In the S phase of meiotic interphase, each chromosome replicates, producing two copies of each allele, one on each chromatid, the homologous chromosomes segregation takes place in__
Which of the following statements is correct about the segregation of chromosomes?
a.If no crossing over has taken place, the two chromatids of each chromosome segregate in anaphase II and are identical
b. If crossing over has taken place, the two chromatids are no longer identical, and the different alleles segregate in anaphase II
c. If no crossing over has taken place, the two chromatids of each chromosome segregate in anaphase I and are identical