Answer: C. Measles
Explanation:
Measles is a contagious disease which is caused by the Rubeola virus. It is an airborne disease which spread easily through sneezes and coughs of the infected person. It may also caused due to direct contact with the nasal secretions. It can spread when people share a common living space and lack immunity to fight against the disease causing symptoms.
The symptoms include cough, inflamed eyes, red rashes all over the body and begins with fever.
On the basis of the above information, measles is the disease due to which the client must be placed in a respiratory isolation so as to prevent the infection to other people.
If the father had the gene BB (purebred & not carrying colourblind allele), then the answer will be a). All of their children will have normal vision with half of them carrying the colourblind allele.
If the father had the gene Bb (hydrid & carrying colourblind allele), then the answer will be d). 3/4 of their children would have normal vision whilst the last quarter would have colourblind males. This is due to them having to receive one colourblind allele from their mother on the X chromosome & one colourblind allele from their father on the Y chromosome.
