If a red crown is a recessive sex-linked trait in Australian warblers, what percent of the offspring will have red crowns from a cross of: a red-crowned male and a heterozygous brown-headed female? Fill in the parental cross, the Punnett square, and give the indicated percentages: % female w/red crowns, % male w/red crowns, %total offspring w/red crowns

white blood cells or wbc s are mainly 2 types-

1.agranulocytes

2.granulocytes

the monocytes or macrophages of agranulocytes , dendritic cells which are accessory leucocytes, and b cells which is one type of lymphocytes   identify the antigens present on the pathogen's surface. these three cells are called antigen presenting cells(apc) which are phagocytes and destroy the antigens by secreting antitoxins. besides this leukocyte is always plays vital role in the immunity of the body.

b ti isnfornopgnoernfrof

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products