It is inherited in an autosomal recessive manner and is caused by a mutation in the HBB gene. The mutation that causes hemoglobin E disease primarily occurs in Southeast Asian populations, and rarely in Chinese populations. Most people with HbE disease do not need any treatment.
CHAPTER 27 Homework Review ï· The ability of sperm cells to move along the ductus deferens is due to ________. peristaltic contractions ï· Prostate cancer is _______.sometimes a slow-growing cancer that may never represent a threat to the patient ï· Erection of the penis results from ________.a parasympathetic reflex ï· Why doesn't semen enter the ...
The oestrogen also stimulates the glands in the cervix to disperse the mesh mucus and produce instead a wet slippery mucus with swimming lanes along which sperm can move easily, as if on a âmotorwayâ. This new mucus is alkaline and contains glucose and other nutrients vital to sperm survival.