This is an example of CONDOMINANCY.
Condominancy is said to occur when two different alleles are combined together to form a different allele, in which the alleles are expressed equally and none of them is dominant. In the example given above, the black rat population mated with the white rat population to produce offspring that are grey in colour. Thus, the white and the black colour of the parents are not dominant, but are equally expressed to give gray colour.
<u>Typical symptoms of TB include:</u>
- a persistent cough that lasts more than 3 weeks and usually brings up phlegm, which may be bloody.
- weight loss.
- night sweats.
- high temperature.
- tiredness and fatigue.
- loss of appetite.
- swellings in the neck.
They po it out when it is digested
