what does xy mean

what does xy mean The XY sex determination system is a sex determination system present in many mammals including humans some insects some snakes some fish and some plants Ginkgo tree In this system the sex of an individual usually is determined by a pair of sex chromosomes

Sex chromosomes are the genetic elements that define a person s biological sex Learn about the XX and XY chromosomes the sex determination system and other chromosome combinations Sex chromosome either of a pair of chromosomes that determine whether an individual is male or female The sex chromosomes of human beings and other mammals are designated by scientists as X and Y In humans the sex chromosomes consist of one pair of the total of 23 pairs of chromosomes

what does xy mean

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Sex chromosomes are chromosomes that affect your sexual anatomy and reproductive development Most of us were raised with the idea that there are two sexes male and female We re usually told Females have an XX pair of sex chromosomes and males an XY pair A baby s gender is determined by the sperm cell that fertilizes a woman s egg Sperm carries one sex chromosome either a Y male or X female To better understand let s look at how sperm develop

Some people have differing sex chromosomes such as those who are born with an extra X chromosome XXY or who are missing an X chromosome XO Or some people with XX or XY chromosomes might have physical characteristics that don t seem to align with what s typically expected of their DNA Sex Determination A humans sex is predetermined in the sperm gamete In mammals females are said to be homogametic because all their gametes contain an X chromosome Males are called heterogametic because they produce both X bearing gametes and Y bearing gametes

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Males receive an X and a Y chromosome represented as XY But where do the X and the Y come from Like all chromosomes the X and Y chromosomes that determine gender are passed from parents to offspring The X and Y chromosomes commonly referred to as the sex chromosomes are one such pair They determine the biological sex reproductive organs and sexual characteristics that develop in a person

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what does xy mean - Females have an XX pair of sex chromosomes and males an XY pair A baby s gender is determined by the sperm cell that fertilizes a woman s egg Sperm carries one sex chromosome either a Y male or X female To better understand let s look at how sperm develop