The following questions refer to the figure below, which shows an outcrop of sedimentary rock whose strata are labeled A-D. If x indicates the fossils of two closely related species, neither of which is extinct, then their remains may be found in how many of these strata?

#Question id: 34183

#Unit 3. Fundamental Processes

A. A & B can be leading strands

B. B & C can be lagging strands

C. Ligase mutants will affect ether A & D or B & C

D. E and F are origins

E. G is replication fork

Choose true and false

#Question id: 34184

#Unit 3. Fundamental Processes

#Question id: 34185

#Unit 3. Fundamental Processes

#Question id: 34186

#Unit 3. Fundamental Processes

#Question id: 34187

#Unit 3. Fundamental Processes

#Question id: 40547

#Unit 14. Methods in Biology

In ‘TaqMan’ assay for detection of base substitutions (DNA variants), probes (oligonucleotides) with fluorescent dyes at the 5′-end and quencher at 3′-end are used. While the probe is intact, the proximity of the quencher reduces the fluorescence emitted by reporter dye. If the target sequences (wild type or variant) are present, the probe anneals to the target sequence, down stream to one of the primers used for amplifying DNA sequence flanking the position of variants. For an assay two flanking PCR primers, two probes corresponding to the wild type and variant allele and labeled with two different reporter dyes and quencher were used. During extension the probe may be cleaved by the Taq-polymerase separating the reporter dye and the quencher. Three individuals were genotyped using the assay. Sample for individual I shows maximum fluorescence for the dye attached to the wild type probe, sample for individual II shows maximum fluorescence for the dye attached to variant probe and sample for individual III exhibits equal fluorescence for both the dyes. Which of the following is correct?