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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.
Q How many germ layers originate the body of platyhelminthes? In relation to this characteristic how are these animals classified? Platyhelminthes are the first triploblastic a
Chromatin is made of DNA molecules associated to proteins known as histones.
Of which type of tissue is the heart made? How is this tissue oxygenated and nutrified? The heart is made of striated cardiac muscle tissue. The heart muscle is known as the my
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Q. What is action mechanism of antibiotic penicillin? Penicillin, discovered by the Scottish doctor Alexander Fleming in 1928, is a drug that inhibits enzymes essential for the
Define tracheal system in details. Respiratory system found in insects and some spiders where air passes directly to the tissues through a series of tubules. Since oxygen tran
Q. What is Sulphonylureas? Sulphonylureas: Tolbutarnide is the mildest and its effect remains for 8 hours hence 2-3 doses need to be taken. Another drug chlorpropamide needs on
In vitro Studies - Nutrition of Embryo Studies involving culture of embryos excised of various stages of development (i.e., early globular proembryo, late globular proembryo o
A laboratory mouse homozygous for an RFLP marker is mated to a wild mouse that is heterozygous for that marker. One of the heterozygous individuals resulting from this cross is mat
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