Yes, heterozygous recessive is a thing it is a particular gene that has identical alleles its has the same letters for a dominant trait it's (XX) and for a recessive is lowercase (xx) just remember the alphabet the D is first then the R so D is capital and R is lower case
All white blood cells are produced and derived from multipotent cells in the bone marrow known as hematopoietic stem cells. Leukocytes are found throughout the body, including the blood and lymphatic system.
