During the rock cycle igneous rock is weather into metamorphic rock
James Watson<span> and</span>Francis Crick <span> discovered the three-dimensional structure of dna in 1953</span>
Answer:
Presence of papillary muscles
Explanation:
- Papillary muscles are structural components of the ventricles.
- They are attached to the cusps of the mitral and tricuspid valves through connective tissue strings known as the cordinae tendeneae (heart strings).
- These muscles prevent the prolaspse of these valves during ventricular systole.
- Although they differ in number i.e. two in left and three in right ventricle, papillary muscles are present in both ventricles.
So the process involves copying the chromosomes first and then carefully separating the copies to give each new cell a full set
