To explain: The reason that the children with xeroderma pigmentosum usually cannot carry out excision repair and are susceptible to developing cancer.
Introduction: The xeroderma pigmentosum is a very rare disease and is caused only when the baby receives faulty genes from both the parents. Such diseases are known as recessive diseases. It is an autosomal genetic disorder which results in the impairment of the excision repair system of an individual.
To explain: The reason for using the word “usually” in the sentence that “the children with xeroderma pigmentosum usually cannot carry out excision repair”.
Introduction: The xeroderma pigmentosum is a very rare disease and is caused only when the baby receives faulty genes from both the parents. Such diseases are known as recessive diseases. It is an autosomal genetic disorder which results in the impairment of the excision repair system of an individual.
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Becker's World of the Cell (9th Edition)
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