Hereditary diseases pass from parents to offspring via genes during fertilization. If the gene associated with a disease is dominant, it only needs one copy from either parent to express the disease. However, for recessive diseases, one copy of the gene from each parent is needed.
Hereditary diseases are illnesses that are passed from parents to their offspring through genes. This process of transmission takes place through the reproductive cells (gametes) during fertilization.
Each parent contributes one set of chromosomes to the offspring, and therefore, one version (an allele) of each gene. If a particular gene associated with a disease is dominant, an individual merely needs to inherit one copy from either parent to express the trait.
However, for recessive diseases, an individual must inherit two copies of the gene, one from each parent, to express the disease. This is how conditions such as cystic fibrosis or sickle cell anemia are spread from generation to generation.
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Answer:
Provide a smooth surface at the ends of synovial joints
Explanation:
Cartilage is the smooth elastic tissue that covers and protects the ends of the long bones. This structural component is present in nose and ear. Different types of cartilage are hyaline cartilage, articular cartilage and so on.
Articular cartilage may be defined as a type of hyaline cartilage that are present on the articular surfaces of the long bones. Articular cartilage is present in close association of menisci. This cartilage provides the smooth surface to the synovial joints and bathed in the synovial fluid.
b. neuron.
c. red blood cell.
d. white blood cell.
The oesophagus helps with digestion rather than respiration as it is connected from mouth to stomach.
Respiratory system is defined as the system that performs the function of gaseous exchange.During this process fresh air is inhaled and waste material in form of carbon dioxide is released out.
The main components of respiratory system are lungs, blood vessels, trachea and nassal passage. By combining all these components respiratory system of the body performs it's function properly.
The body consists heart, blood vessels, arteries, veins and blood that all combined together to supply blood to all parts of body and takes up waste material from it and four major components and these are heart, veins, arteries, and blood. These are the four components that combined and form cardiovascular system.
Therefore,the oesophagus helps with digestion rather than respiration as it is connected from mouth to stomach.
Learn more about respiratory system here:
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