The pectoral muscles are found on the anterior chest wall (thoracic wall) of a pig. Three pectoral muscles are:
1. Pectoralis major- the most superficial muscle in this region.
2. Pectoralis minor- the muscle that is below the pectoralis major
3. Serratus anterior- the muscle that is adjacent to the chest wall
Answer:
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Answer:
The phosphorus in all biological tissues can be traced back to phosphorus weathered from rock.
The periodic table only accounts for elements. It does not account for compounds, such as water.
The correct answers are evolution, genetic mutation and selection.
The early ancestors of horses showed the pressence of digits and now the modern horses have hooves in their limbs. There could be many reasons for the pressence of hooves horses.
These could be due to the genetic mutations, which could have changed the shape of the digits in the limb. Sudden change in DNA can cause mutation and this mutation can change the phenotype of the horse.
There are chances that evolution took place over a period of time that changed the character in the horse.
Natural selection can also be one of the reason for the change in the phenotype of the digits on the limb of the horses.