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At least one percent of adults experience coital cephalalgia, or "sex headaches," aka head pain that occurs before, during, or after orgasm.
Here's what you need to know about this condition, which is basically the unpleasant epitome of a buzzkill. The first is "a dull ache in the head and neck that intensifies as sexual excitement increases," and the second is "a sudden, severe, throbbing headache that occurs just before or at the moment of orgasm."RELATED: The 11 most sexually active states in America Loyola Medicine adds a third to the mix, saying this condition can also manifest as "a headache that occurs after sex and can range from mild to extremely painful.
The headache gets worse when the patient stands and lessens when the person lies back down," according to José Biller M.
D., a neurologist who is chair of the Department of Neurology with the Loyola University Chicago Stritch School of Medicine and certified in Headache Medicine by the United Council for Neurologic Subspecialties.
In a double heterozygous organism (Why is this the case?
Genes on separate chromosomes assort independently because of the random orientation of homologous chromosome pairs during meiosis.
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Genes that are sufficiently close together on a chromosome will tend to "stick together," and the versions (alleles) of those genes that are together on a chromosome will tend to be inherited as a pair more often than not. When genes are linked, genetic crosses involving those genes will lead to ratios of gametes (egg and sperm) and offspring types that are not what we'd predict from Mendel's law of independent assortment.As illustrated in the diagram below, the homologues of each pair separate in the first stage of meiosis.