Answer:
The correct answer will be option-E.
Explanation:
Chordae tendinae are the string-like structure in the heart which is composed of dense regular connective tissue called collagen and elastin proteins. They arise from the papillary muscles of the heart and branches out in the ventricle portion of the heart.
These play an important role in the closure of the AV valves to prevent the backward flow of the blood to the atria during ventricular contraction by holding cusps of the valve into the dome-shaped structure.
Thus, option-E is the correct answer.
Therapeutic cloning<span>generates personalized ES cells
o Uses the technique of nuclear transplantation to produce cultured ES cells
o The cell that has received the transplanted nucleus is allowed to undergo the earliest steps of development giving rise to a very early embryo consisting of about 200 cells
• Not transferred into the uterus of a foster mother but used as a source from which ES cells are derived
o Cells obtained are genetically identical to the original donor
• Can be grafted back into the adult from whom the donor tissue was taken without fear of immunological rejection</span>
B. mixture in which its components retain their identity
