Psychology Homosexual

Gay genes on the X-chromosome Exclusive crotchet is puzzling for evolutionary biologists because homosexuals leave substantially fewer offspring. Some marry erupt-of-pocket to social pressures and end up having children but many do not reproduce. Any genes predisposing to homosexual behavior would thus come out of the closet off excluded by inseparable survival. Current research implies young-begetting(prenominal) oddity is a sex-linked trait, although genes atomic number 18 far from being the on the whole story. (Female homosexuality is excessively heritable but less is cognise of the ge saltation the sackic mechanisms). See All Stories In Nature vs. Nurture move a Therapist Search for a mental wellness master key near you. Find Local: Acupuncturists Chiropractors abrade Therapists Dentists and more! sex-linked traits, such as color blindness highlight a curious chink in the harness of natural selection. In the normal syllabus o f events, any communicable trait that impedes excerpt or reduces reproductive success gets winnowed out by natural selection operating over many generations. Sex-linked traits ar different because they are on the X-chromosome. Females are carriers of the affected genes (since fathers endlessly transmit Y-chromosomes to their offspring in the course of normal fertilization).

Females rarely manifest the sex-linked trait, however, because their second X-chromosome masks the mutated gene. This situation opens up a genetic conflict of interest among the sexes. Why? Because a gene that is harmful to male transcr ipt can be retained by natural selection if ! it provides advantages to females. Indeed, if the reproductive make to females is greater than the cost to males, then lineages having the sex-linked gene volition out-reproduce those lacking it based on wide-eyed arithmetic. A gene promoting male homosexuality could therefore compositors case through the net of natural selection. For this theory of male homosexuality to be credible, at least two criteria would have to be met. First, it would have to be demonstrated that male...If you want to get a full essay, articulate it on our website: OrderCustomPaper.com

If you want to get a full essay, visit our page: write my paper