Answer:
The periosteum is one source of precursor cells which develop into chondroblasts and osteoblasts that are essential to the healing of bone. Other sources of precursor cells are the bone marrow (when present), endosteum, small blood vessels, and fibroblasts.
Answer: Meiosis is the necessary process for the inherited traits of an organism to be passed along by sexual reproduction to bring about variation.
Explanation: Meiosis occurs in reproductive cells. It halves the chromosome number of parents to produce same (constant) number of chromosomes in the offsprings.
Meiosis leads to genetic variation among offsprings through recombination, crossing over, independent assortment and reduction and fusion of gametes.
Most abnormalities that are heritable are as a result of improper division during meiosis.
Answer: magma may rise and form in both locations
Explanation:
Answer:
Limbic system.
Explanation:
The limbic system lies at both the sides of the thalamus. This structure is also known as paleomammalian cortex. The limbic system was discovered by Paul D. Maclean.
The limbic system is involved in the emotion control, motivation, behavior and also involved in the award and punishment. The malfunctioning in the limbic system may stem the various addictive disorders.
Thus, the correct answer is option (c).
