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Who carries both X and Y chromosomes?
The male carries one X and one Y chromosome in their somatic cells.
Why is a human cell containing 22 autosomes and a y chromosome a sperm?
Human somatic (body) cells contain two sets of 23 chromosomes. Human gametes (sperm and egg cells) contain one set of 23 chromomes -- 22 autosomes and 1 sex chromosome. Only a sperm cell can carry a y chromosome. A sperm cell can also carry an x chromosome. The ovum can carry only an x chromosome, never a y chromosome. So a cell containing 22 autosomes and a y chromosome must be a sperm cell.
What is the chance that a human zygote will receive one X and one Y sex chromosome during fertilization 100 percent 25 percent 75 percent 50 percent?
Fifty percent. All eggs contain an X chromosome. Sperm are either X or Y, and are usually present in equal numbers.
Which sex chromosome do sperm cells carry?
Sperm cells are of two types. One type carries a Y chromosome, while the other type carries an X chromosome. This is the reason why the Spermatid is the 'deciding factor' in whether a baby will be male or female. The Ovum always carries an X chromosome.
Why does a female with a gene for a sex-linked disorder usually appear normal?
A female with a gene for a genetic disorder will usually only have it on one of her two X chromosomes. The other chromosome will carry the healthy version of the gene, which will carry out that gene's function when the other chromosome cannot. Males will exhibit the disease if they have the gene as a male human only has one X chromosome. So, in order for a female to have a genetic disorder carried on her sex chromosome her mother would have to have the defective gene and her father would have the disorder.
What is the probablilty that a human sperm cell will carry an X chromosome?
The male gamete is comprised, on average, of 50% of the X chromosome and 50% of the Y chromosome.
Why do fraternal twins don't have to be of the same sex?
Unlike identical twins, fraternal twins come from two separate eggs each getting fertilized by a separate sperm. Now these sperms can both carry an X chromosome or a Y chromosome giving rise to fraternal twins of the same gender. But at times one could carry the X chromosome and the other could carry the Y chromosome resulting in twins of opposite gender.
what cell contain only one sex chromosome?
In males, sperm contain only one sex chromosome. In females, eggs contain only one sex chromosome.
What cell contains only one sex cell?
In males, sperm contain only one sex chromosome. In females, eggs contain only one sex chromosome.
What chromosome do women carry?
All organisms carry a set number of pairs of chromosomes, in humans it is 23 pairs. Of these chromosomes one pair controls the sex of the human. The sex chromosomes are called the X and Y chromosome. Females have XX pairing and Males XY.
Will the eggs of a down syndrome women have extra chromosomes?
yes they will have one more chromosome
Who carries both X and Y chromosomes?
The male carries one X and one Y chromosome in their somatic cells.
Do men carry only XX chromosomes?
Men typically have one X chromosome and one Y chromosome. Women typically have two X chromosomes. So-called XX males have two X chromosomes; thus they are genetically female but otherwise appear to be male.
During meiosis each egg normally carries a single x or y chromosome?
An egg can only carry an X chromosome. In normal cases, it only carries one. The sperm carries either one X or one Y chromosome.
Why is a human cell containing 22 autosomes and a y chromosome a sperm?
Human somatic (body) cells contain two sets of 23 chromosomes. Human gametes (sperm and egg cells) contain one set of 23 chromomes -- 22 autosomes and 1 sex chromosome. Only a sperm cell can carry a y chromosome. A sperm cell can also carry an x chromosome. The ovum can carry only an x chromosome, never a y chromosome. So a cell containing 22 autosomes and a y chromosome must be a sperm cell.
How many eggs does a chicken carry?
One at a time.
Which cell contains only one sex cell?
Gametes (sperm and eggs) contain only one sex chromosome.
