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Why is x chromosome called x?

An X chromosome is known as an X chromosome based on its shape, which resembles an X. The Y chromosome resembles a Y.


Does an x chromosome looks the same as a y chromosome?

No. An 'X' chromosome looks like an 'X'. The 'Y' chromosome looks like a deformed 'X'. It is noticeably different to an 'X' chromosome. Also, the 'Y' chromosome is only a third of the size of an 'X' chromosome - an 'X' chromosome is 155 million base pares, while the 'Y' chromosome is only 58 million base pairs.


How many times bigger is the x chromosome from the y chromosome?

In terms of base pairs, the X chromosome is about 155 megabases (million bases), and the Y is about 57 megabases. Note that there can be variation in the lengths of Y chromosomes between men, due to different amounts of constitutive heterochromatin on the long arm. That is, the long arm of the Y contains repeated sequences. The number of these sequences can be different between individuals, thus the size of the chromosome can be different between men.


Which gamete has the chromosome that determines a person's sex?

The sperm gamete carries either an X or a Y chromosome, which determines the sex of the offspring. If the sperm carries an X chromosome, the offspring will be female, while if it carries a Y chromosome, the offspring will be male.


Is an x chromosome and chromosome the same thing?

An x chromosome is specifically a feminine chromosome. With a x and y chromosome its male, with a x and x, it is a female.


Are men x or y chromosomes?

There is much more DNA in the X chromosome. The Y has genes for addition growth and most of the testosterone that the body makes. A person can live with only one X but here are no people without the X and only the Y.


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 portion of the human Y chromosome is homologous to the human X chromosome?

The pseudoautosomal regions (PARs) at the tips of the Y chromosome are homologous to regions on the X chromosome. These PARs are responsible for pairing and recombination between the X and Y chromosomes during meiosis. About 5% of the Y chromosome is homologous to the X chromosome in humans.


In humans a male has?

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


Is there an X or Y chromosome in an egg?

An egg will have the X chromosome and the sperm will have an X or Y chromosome.


The Y chromosome is larger and carries fewer genes than the X chromosome?

No. The Y chromosome is much smaller than the X chromosome. There are only about 70 active genes on the Y chromosome and many more deleteriously mutated one. The X chromosome contains many more active genes and only crosses over marginally with the Y chromosome.


Why does the X chromosome affect an organisms phenotype more than the Y chromosome?

The X chromosome contains considerably more genetic material than the Y chromosome.