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In the cytological terminology x and y chromosomes are identified as sex chromosomes. In human being these chromosomes are responsible for determination of sex in the offspring.
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What 2 chromosomes identify a female?
women have two x chromosomes whereas men have one x chromosome and a y chromosome.
Is there an X or Y chromosome in an egg?
Yes, egg cells contain an X chromosome, while sperm cells can contain either an X or a Y chromosome. The combination of chromosomes from the egg and sperm determines the genetic sex of the offspring.
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.
How do X and Y chromosome differ?
The X chromosome is larger and carries more genetic information than the Y chromosome. The Y chromosome carries the genes that determine male sex characteristics, while the X chromosome carries genes that are important for both male and female development. Males typically have one X and one Y chromosome, while females have two X chromosomes.
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.
What 2 chromosomes identify a female?
women have two x chromosomes whereas men have one x chromosome and a y chromosome.
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.
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.
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?
Yes, egg cells contain an X chromosome, while sperm cells can contain either an X or a Y chromosome. The combination of chromosomes from the egg and sperm determines the genetic sex of the offspring.
The Y chromosome is larger and carries fewer genes than the X chromosome?
The Y chromosome is smaller than the X chromosome and carries fewer genes because it has lost many genes over evolutionary time. The Y chromosome primarily carries genes involved in male sex determination and development.
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.
How do X and Y chromosome differ?
The X chromosome is larger and carries more genetic information than the Y chromosome. The Y chromosome carries the genes that determine male sex characteristics, while the X chromosome carries genes that are important for both male and female development. Males typically have one X and one Y chromosome, while females have two X chromosomes.
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.
