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Q. Mismatch and Recombinational repair?
Mismatch repair:
1. Mismatches can take place when DNA polymerase inserts wrong nucleotide during replication 2. Mismatch repair is"coupled" to replication
Recombinational repair:
1. Takes place during DNA replication 2. Major steps: (a) DNA polymerase skips over damaged DNA leaving a gap opposite the lesion (b) Undamaged parental strand recombines into the gap (this is facilitated by recA protein in E. coli) (c) the new gap in parental strand is filled by DNA polymerase and ligase.
If jean-Baptiste de Lamarck was correct, than a. Natural selection would lead to the spread of favourable traits within a population b. Finches that stretched their beaks to access
A 19 year old model for Glamour magazine tripped over an extension cord causing injury to her epidermis. She is afraid the injury will leave a scar. Based on your knowledge of rege
Parasites - Biological Stress Many insects and microorganisms can feed upon tissues and saps of living plants. Hence plants must be protected against such parasites either by
In which period of life does the formation of gametes begin in women? The meiosis that forms female gametes begins in the cells of the ovarian follicles before birth. After the
Which of the following is true for ventilation? A. Interneurons responsible for generating the rhythm of ventilation are located only in the hypothalamus. B. All the central
Q. What are the main functions of the cytoskeleton? As the name indicates, the cytoskeleton is accountable for the support of the normal shape of the cell it also acts as a fac
Q. List down the various mycotoxins associated with food? Mycotoxins associated with foods are: • Aflatoxins (produced by Aspergillus flavus) • Ochratoxin (produced
Name two possible why the number of live bacteria cell have reached the stationary growth by 60hrs and start to die off after 12hrs?
In a neuron at rest, the membrane A. voltage will be less than zero. B. sodium conductance is greater than the membrane potassium conductance. C. voltage is less than the
what is phylum mollusca?
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