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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.
Wiki User
∙ 11y ago
Wiki User
∙ 13y agoyour 23rd pair of chromosomes either has a XX or a XY. An XX is a female, a XY is a male. the y in the chromosomes determines it by a random guess
Wiki User
∙ 14y agoAll the genes on the Y chromosome are related to male characteristics.
Wiki User
∙ 8y agoThe Y chromosome contains genes for "maleness". It produces male sex hormones and while the fetus is developing, it produces direction for the formation of male parts.
Wiki User
∙ 9y agoIt helps in the determination of sex. Its presence brings maleness in the human being.
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Which chromosome carries a gene which is essential for maleness?
The Y Chromosome.
In humans a male has?
one X chromosome and one Y chromosome
Whose chromosomes determine the sex of offspring in humans?
In humans, it is the father's chromosomes that determine the sex of offspring. The father contributes either an X or a Y chromosome, while the mother always contributes an X chromosome. If the combination is XX, the offspring is female, and if it's XY, the offspring is male.
What are the X and Y chromosomes called?
The X and Y chromosomes are called the "Sex Chromosomes". Both the X and Y chromosome are part of the "sex-determining system" that helps determine the sex characteristics in humans. In the system, females have two X chromosomes (XX) while males have an X and a Y chromosome (XY).
Why is human Y chromosome a marker for only the paternal and not the maternal human genetic lineage?
Because XY denotes male. The SRY region is on the Y chromosome. This is the sex determining region, males are made and females are the default condition in humans.
Which chromosome carries a gene which is essential for maleness?
The Y Chromosome.
Genes that determine sex-linked traits in humans are found on the?
Y chromosome.
The y chromosome closely resembles many of the other chromosomes. What did you have to do to determine that it was the y chromosome?
The Y chromosome closely resembles many of the other chromosomes. What did you have to do to determine that it was the Y chromosome?
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.
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.
In humans a male has?
one X chromosome and one Y chromosome
In humans the shorter of the sex chromosomes?
In humans, the Y chromosome is noticeably shorter than the X chromosome.
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.
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.
Does the male or female determine the gender in humans?
It is the x or y chromosome in the sperm of males that determine the sex of the baby. The woman carries two x chromosomes and the sperm either carries another x (a girl) or a y (a boy).
In humans a zygote will develop into a male it the?
egg contributes an X chromosome and the sperm contributes a Y chromosome.
