Explanation:
Cancer occurs in dividing cells only because genetic materials divide into two equal portions during division. This process may be interrupted by carcinogenes or mutagenes to make mutate cells and then render them as cancer cells. In the brain, the cells are differentiated and there is no chance to start division, then how can cancer be found in the brain.
Answer:
Acquired mutations occur at some time during a person's life and are present only in certain cells, not in every cell in the body. These changes can be caused by environmental factors such as ultraviolet radiation from the sun, or can occur if an error is made as DNA copies itself during cell division.
Explanation:
The correct answer is b. no additional nucleotides would be added to a growing strand containing that nucleotide.
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Nucleotides without a 3’hydroxy group are called dideoxynucleotides (ddNTD). Dideoxynucleotides are inhibitors of DNA polymerase because after being added in PCR reaction no further nucleotides can be added as no phosphodiester bond can be created (usually 3' hydroxyl group of the previous nucleotide attaches to 5' phosphate of the current nucleotide).</span>
Answer:
Prokaryotic cells reproduce by a process that is called binary fission.
Explanation:
The DNA in such cells is contained in a single circular chromosome called a plasmid within the cytoplasm. The reproductive process starts with the replication of the chromosome.
Answer:
Image result for plastic wrap for sandwiches
cling film
Food plastic wrap, also known as cling film, food wrap, and saran wrap, is a thin plastic film commonly used for sealing and securing food items in containers to keep fresh. Food Plastic wrap is sold in individual rolls or more typically sold with a roll in a box that has a cutting edge on it. Explanation:
