Because each possibility is equally likely, genotypic ratios can be determined from a Punnett square. If the pattern of inheritance (dominant or recessive) is known, the phenotypic ratios can be inferred as well. For a monohybrid cross of two true-breeding parents, each parent contributes one type of allele. In this case, only one genotype is possible.
Occult (hidden) bacteremia is the presence of bacteria in the bloodstream of a child who has a fever but who looks well and has no obvious source of infection. Most commonly, occult bacteremia is caused by Streptococcus pneumoniae bacteria. Typically, children have no symptoms other than fever.
Occult blood in urine is often said as the occult blood +, which means there are 10 red blood cells which is observed under the high-power microscope. And 20 red blood cells in urine means occult blood ++, 30 red blood cells in urine means occult blood +++, 40 red blood cells means ++++.