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It depends which species you are.
There is the XY system (which mammals use) where it is the presence of the Y chromosome that induces male development. The Y chromosome contains genes like Sry that initiate the male developmental program. Male mammals have an X and a Y chromosome, female mammals have two X chromosomes.
However, for other species, like birds, use the so-called ZW sex chromosome system where it is actually the absence of the W chromosome that permits male development - male birds have two Z chromosomes and female birds have a W and a Z chromosome.
And then there's the X0 system, which many insects use, where two copies of an X chromosome results in a female but a single copy of an X chromosome results in a male.
Wiki User
∙ 11y ago
Wiki User
∙ 9y agoXX is female as the female only has X chromosomes. The father is the decider of the gender, he carries the XY chromosomes and a child needs XY to be male.
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What is the chromosome that represents the sex chromosome?
You have pair of X chromosomes in case of females. You have a pair of X and Y chromosomes in case of male.
What are xx chromosomes called?
XX chromosomes are called sex chromosomes and are typically found in females.
Why is the 23rd pair of chromosomes not always homologous?
The 23rd pair of chromosomes are the sex chromosomes. In female humans, both sex chromosomes are homologous, and characterized as XX. In male humans, one sex chromosome is an X chromosome and the other is a much smaller, nonhomologous Y chromosome, and is characterized as XY.
How many linkage group has females?
One pair of chromosomes constitute a single linkage group in humans except in case of sex chromosomes of male. In human females total of 23 linkage groups are present - 22 pair of autosomes and 1 pair of sex chromosomes (XX). In human male total of 24 linkage groups are present - 22 pair of autosomes , one X and one Y.
The 23rd pair of human chromosomes tells the gender with xx being and xy being male which gender is karyotype?
XX is Female XY is Male
What pair of chromosomes is not homologous in a normal male karyotype?
sex chromosomes
Which pair of chromosomes tells your gender?
Sex chromosomes (XX = female and XY = male)
What is the chromosome that represents the sex chromosome?
You have pair of X chromosomes in case of females. You have a pair of X and Y chromosomes in case of male.
What is the pair of sex chromosomes that a woman has?
XX and a male has XY
What is a pair of chromosomes carrying genes that determine whether a person is male or female?
Genetic chromosomes
What are sex chromosomes in a human male?
We call these sex chromosomes. Whether you are a male or female depends on the presence or absence of certain chromosomes. The sex chromosomes are the X chromosome and the Y chromosome. If you have two XX, you will show female characteristics and If you have XY you will show male characteristics.
One of the pair of chromosomes that determines the sex of an individual?
The 23rd pair in a karyotype shows if it will be male or female
Which is the sex chromosome of lions?
You have pair of X chromosomes in case of females. You have a pair of X and Y chromosomes in case of male. This is true for all the mammals, most probably.
What are heterosomes?
Heterosomes are the sex chromosomes, i.e.: the 23rd pair of chromosomes in a karyotype. In a human female these are XX, and in a human male they are XY.
Whether a human is male or female is determined by his or her?
Their genotype. The human has 46 chromosomes, or two pairs of 23 chromosomes (haploid) where one pair of these chromosomes contain the genetic information that determines a human's gender. The female possesses a pair of chromosomes labelled as XX. The male possesses a pair of chromosomes labelled as XY. In the case of a male, the Y gene is inherited from the father (X from the mother) and does not contain the usual genotypes that determine an individual's appearance etc. Instead it contains a few genes that activate body functions in the male such as producing hormones in the testes, or enabling the male to possess a deeper voice etc.
What are xx chromosomes called?
XX chromosomes are called sex chromosomes and are typically found in females.
How many chromosomes are there in sex cells and why?
22 pair of autosomes and 1 pair of sex chromosomes. A male determines the sex with XY chromosomes and the female only has YY. 23; half of the normal 46 for a cell. This is so when the male and female cells meet, they will form a normal 46-chromosome cell.
