Answer:
Cystic fibrosis mutation is recessive to normal allele because only one functional or normal allele is enough to produce a functional protein. So, if mutation is present in one allele then also, a normal protein can be made from normal allele. The presence of normal protein prevents the expression of disease.
In addition, mutated allele only results in the loss of function of protein which can be compensated by the expression of normal allele. It does not add any toxic effect to the protein. Consequently, the disease is inherited in autosomal recessive fashion.
In contrast, Huntington mutation not only alters the structure of the functional protein but also adds toxicity to it. The altered protein is enable to interact with 100s of other proteins and inhibit or decrease their function. So, if only one allele is present then also, the mutated protein will be produced and it will result in the phenotype. Consequently, it is inherited as autosomal dominant fashion.
The correct sequence of nerves that exit the spinal cord, going from superior to inferior; cervical, thoracic, lumbar, and sacral. The spinal cord is divide into four different regions; the cervical, thoracic, lumbar and sacral regions. The different cord regions can be visually distinguished from one another. There are 31 segments, defined by 31 pairs of nerves exiting the cord. These nerves are divided into 8 cervical, 12 thoracic, 5 lumbar, 5 sacral, and 1 coccygeal nerve.
Answer: All the given symptoms describes Pertussis.
Explanation:
Pertussis can also be defined as whooping cough or 100 day cough. It is respiratory disease which is highly contagious.
it is caused by the bacteria Bordetella pertussis. It is also known to be uncontrollable as this condition does not allows the person to breathe properly.
If recognized at early stage then antimicrobial like erythromycin can be used to treat it. The symptoms of this disease lasts for a long time and is not cured easily. Its initial stage includes cold, cough and running nose, same as common cold.
I believe the correct answer from the choices listed above is option C. It is the products that is not requires in a chemical reaction. These are the substances that is being produced from the reactants involved in the system which needs the atomic nuclei and energy.
