An embryo with 2 X chromosomes develops into a female due to the presence of genes on the X chromosomes that promote the development of female reproductive structures and characteristics. These genes lead to the production of hormones that guide the development of female features during prenatal development.
XX
A female embryo is born with a lifetime supply of eggs already in her ovaries. It is estimated that a female fetus has around 1 to 2 million eggs at about 20 weeks of gestation, which gradually decreases over time.
If someone ends up with two x chromosomes (XX) Then they are a girl. If a person has one X chromosome and one Y chromosome(XY) then they are a boy. the men decide what sex the baby is since they have both an x and y. the women gives an x all the time.
Humans have a total of 23 pairs of chromosomes, which includes 22 pairs of autosomes and 1 pair of sex chromosomes, for a total of 46 chromosomes.
A normal human female typically has two X chromosomes, denoted as XX.
An individual with 2 X chromosomes and 0 Y chromosomes is biologically female. This chromosome configuration (XX) typically results in the development of female sexual characteristics.
2
An organism with 2 X sex chromosomes is female.
1 and guys have 2
The DO NOT "have exactly the number of chromosomes as the body cells", they have 1/2 that number. This is so that when two sex cells come together to form an embryo, the cells of that embryo have exactly the same number of chromosomes as the body cells of the two parents and not twice that number.
XX
A female embryo is born with a lifetime supply of eggs already in her ovaries. It is estimated that a female fetus has around 1 to 2 million eggs at about 20 weeks of gestation, which gradually decreases over time.
22 and 1/2 chromosomes are common to both males and female. The one that contains the X and Y chromosomes makes the difference. If you have X and Y chromosomes, you are male. If you have two X chromosomes, you are female. So both the male and female have got that one X chromosome in common.
If someone ends up with two x chromosomes (XX) Then they are a girl. If a person has one X chromosome and one Y chromosome(XY) then they are a boy. the men decide what sex the baby is since they have both an x and y. the women gives an x all the time.
Humans have a total of 23 pairs of chromosomes, which includes 22 pairs of autosomes and 1 pair of sex chromosomes, for a total of 46 chromosomes.
women have two x chromosomes whereas men have one x chromosome and a y chromosome.
Gender is determined by chromosomes A male has an X and a Y chromosome. a female has 2 X chromosomes