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Posted

A baby's sex, determined by the combination of sex chromosomes inherited from the egg (always X) and sperm (either X or Y), is established at the moment of fertilization, or conception. 

 

Posted
11 minutes ago, Glasseye said:

 

Because without them @Nightcrawler and @Butch would be very bored individuals.

I've had mine surgically removed, so I can wear T shirts again, especially when the the evenings get a bit chilly 🙂

They always seemed to have been permanently errect 

 

  • Like 1
Posted
16 minutes ago, Nightcrawler said:

I've had mine surgically removed, so I can wear T shirts again, especially when the the evenings get a bit chilly 🙂

They always seemed to have been permanently errect 

 

 

 

I am devestated that you would do such a thing....   :default_baby:

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Posted
14 hours ago, forqalso said:

Nipples develop before the sex is determined.

 

14 hours ago, fygjam said:

A baby's sex, determined by the combination of sex chromosomes inherited from the egg (always X) and sperm (either X or Y), is established at the moment of fertilization, or conception. 

 

During the initial development of the foetus it is androgynous, some say initially female. This is when nipples are developed. Sex organs are a later development. While we are taught that there are X and Y chromosomes, the system is not perfect and some the dangly bits that are called X and Y are not fully or consistently developed giving a range of options that gives the many people with limited education a headache. Genetics is not a precise science, otherwise there would be no variation.

Posted
1 hour ago, Chang_Paarp said:

 

During the initial development of the foetus it is androgynous, some say initially female. This is when nipples are developed. Sex organs are a later development. While we are taught that there are X and Y chromosomes, the system is not perfect and some the dangly bits that are called X and Y are not fully or consistently developed giving a range of options that gives the many people with limited education a headache. Genetics is not a precise science, otherwise there would be no variation.

Forgive me, I should have said “differentiated” instead of “determined”.

 determination and sex differentiation are sequential processes that involve successive establishment of chromosomal sex in the zygote at the moment of conception, determination of gonadal (primary) sex by the genetic sex, and determination of phenotypic sex by the gonads. At puberty the development of secondary sexual characteristics reinforces and provides more visible phenotypic manifestations of the sexual dimorphism. Sex determination is concerned with the regulation of the development of the primary or gonadal sex, and sex differentiation encompasses the events subsequent to gonadal organogenesis. These processes are regulated by at least 70 different genes that are located on the sex chromosomes and autosomes and that act through a variety of mechanisms including those that involve organizing factors, gonadal steroids and peptide hormones, and tissue receptors. Mammalian embryos remain sexually undifferentiated until the time of sex determination.

https://www.ncbi.nlm.nih.gov/books/NBK222286/

Posted

 

I don't know why men have them, but sure am glad women do.   lick lick

 

Years ago I was good friends with a stripper when I lived in corn land. Very nice young lady who used her work proceeds to pay for college.

Her boyfriend at the time got her interested in parachuting.... On her solo jump the bindings on the parachute jerked her nipple real hard. She had forgotten to take out the nipple ring. Went down that jump in agony. 

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