Base excision repair is one of the mechanisms that repair DNA. The DNA can undergo damage when it is exposed to certain chemicals, radiations and mutagens. This phenomenon repairs the DNA throughout the cell cycle. The primary responsibility of the BER is to remove the small and distorted non-helical base lesions from the DNA.
These damaged bases may prove detrimental as they cause mutations by either wrong pairing or by forming breaks in the DNA during the process of replication. The enzyme that initiates the BER is DNA glycosylases and it serves the purpose of identifying and removing the damaged and wrong bases.
Meiotic nondisjunction is much more likely than mitotic nondisjunction. Based on
A woman who is heterozygous, Bb, has brown eyes;
Explain why familial breast cancer shows a dominant pattern of inheritance in
How is an F′ factor different from an F factor?
With regard to the timing of conjugation, explain why the recipient
The raw material for evolution is random mutation. Discuss whether or
Why is an antibody used in this experiment? From
Explain the type of speciation (allopatric, parapatric, or sympatric
In fruit flies, curved wings are recessive to straight wings,
A recessive allele in mice results in an unusally long neck.
