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XX = female. XY= male because the Y chromosome has SRY gene (Sex-deterimining Region Y). The SRY gene in mammals makes the body produce testis which makes testosterone making the foetus male. For more information, please see the related link below.

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Genes that determine sex-linked traits in humans are found on the?

Y chromosome.


Which chromosome carries a gene which is essential for maleness?

The Y chromosome carries the SRY gene (Sex-determining Region Y) which is essential for male sexual development. The SRY gene triggers the development of male sex characteristics during fetal development.


What is the male genotype?

Maleness is not a genotype but a combination of sex chromosomes. A normal human male has an X as well as a Y chromosome.


Why do males determine the sex of the child in humans, as males have a Y chromosome?

Males determine the sex of a child in humans because they carry both X and Y chromosomes, while females carry two X chromosomes. During fertilization, the sperm from the male can carry either an X or a Y chromosome, determining the sex of the child.


In humans what are the chromosome pairs 1 through 22 called?

Chromosome pair 23 in humans is the pair of sex chromosomes. In females, both sex chromosomes are the X sex chromosome, and in human males one sex chromosome is the X and the other is the Y chromosome.


Who determines the sex of the baby in humans?

The father determines the sex of the baby in humans. Sperm cells contain either an X or Y chromosome, and the sperm that fertilizes the egg will determine the sex of the baby. If the sperm carries an X chromosome, the baby will be female, and if it carries a Y chromosome, the baby will be male.


Who has y chromosomes?

In humans, males have one Y chromosome and one x chromosome in addition to 44 other chromosomes, females have two Xs. Because of errors in gamete (egg or sperm) production, some humans have XYY, XXY, or some other combination of sex chromosomes.


In humans a male has?

One X chromosome and one Y chromosome, which determines male sex characteristics.


Men have one of y?

The y chromosome. The chromosome pair that determine sex (gender) can have x and y chromosomes; men have one X and one Y chromosome, women have to X chromosomes.


What sex chromosome is present in all humans?

There are two sex chromosomes: the X chromosome and the Y chromosome. During fertilization, the mother always gives an X chromosome and the father gives either another X chromosome or a Y chromosome. Therefore, all humans have at least one X chromosome.


In humans the shorter of the sex chromosomes?

In humans, the Y chromosome is noticeably shorter than the X chromosome.


Does sperm contain x and y chromosome?

In humans the male sperm contains EITHER an X chromosome, or a Y chromosome since human gametes are haploid (n) in chromosome number.