Answer: An example of point mutation on the gene is TGC CG.
Explanation: Mutation is a permanent alteration in the nucleotide sequence of a DNA. Point mutation is a type of mutation in which there is a change in only one nucleotide molecule in a DNA sequence. A point mutation can occur at any point in the nucleotide sequence of a DNA and can be as a result of replacement of one nucleotide molecule by another. For example, in the the sequence TAC CG, any of the nucleotides can be replaced by another nucleotide such as in TGC CG, Adenine is replaced by Guanine.
Answer and Explanation:
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The experiment done by Meselson and Stahl demonstrated that DNA replicated semi-conservatively, meaning that each strand in a DNA molecule serves as a template for synthesis of a new, complementary strand. Although Meselson and Stahl did their experiments in the bacterium E.
Answer:
Cell is called the Fundamental Unit of Life Because all basic metabolism activity starts from the cell. Inside the cell, energy is produced , food is stored and many more activities take place
it is structural and functional unit of living beings
it includes all the activities of cells
it is there in each and every life process
After age 50, bone breakdown (resorption) outpaces bone formation and bone loss often accelerates, particularly at the time of menopause.
What is Osteoporosis ?
Osteoporosis causes bones to become weak and brittle — so brittle that a fall or even mild stresses such as bending over or coughing can cause a fracture. Osteoporosis-related fractures most commonly occur in the hip, wrist or spine. Bone is living tissue that is constantly being broken down and replaced.
Osteoporosis is a disorder where your bones become brittle, fragile, and easily breakable as you age because certain minerals begin to leach out of them. Because estrogen, which helps keep bones strong, is lost during menopause, women over 50 are particularly at risk for osteoporosis.
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