Answer:
Stem cells.
Explanation:
Stem cells are the undifferentiated and unspecialized cells. These cells have the ability to divide for indefinite periods. Due to their ability to divide, these cells can give rise to specialized cells. Therefore, the cells present in the mucosal surface of the gastrointestinal tract that has the ability to give rise to specialized cells are stem cells. These cells are required to replace the damaged cells with the new functional cells.
The birth and reproduction of Carrier(Heterozygous) organisms, (i.e) heterozygous individuals that have a dominant allele masking the effects of the recessive 'lethal gene.' However even though the gene is masked, it is still there. Therefore, if the heterozygous individual is to reproduce with another heterozygous (carrier) organism there is a higher chance that their offspring will have the active form of the 'lethal gene' causing the death of the offspring.
Answer: false
Explanation: the reason is a scientific theory is not proven. Like the big bang is a scientific theory.
Answer:
your answer is C polymerase Chain Reaction PCR
