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If an individual has the chromosome series XY, that individual would be a male. The Y chromosome is passed down from the father and the X is passed from the mother. The X chromosome contains all hereditary factors while the Y chromosome doesn't contain much genetical information at all, except the fact if Y chromosome is present that individual will be a male. This is all only true for Humans. Dosophilla (fruit flies) have different chromosomal expressions.
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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.
Why does a sex-linked trait only require one recessive allele on the X chromosome of a male to show the phenotype?
Because males have only one X chromosome, any recessive allele present on that X chromosome will be expressed in the phenotype. In females, who have two X chromosomes, the presence of a dominant allele on one X chromosome can mask the expression of a recessive allele on the other X chromosome.
Can an embryo develop with one x chromosome?
Yes, an embryo can develop with one X chromosome, rather than the XX or XY chromosome pair. An example of this is girls born with Turner's syndrome, who have only one X chromosome.
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.
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.
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.
What sex chromosome is present in all humans?
There are two sex chromosomes: the X chromosome and the Y chromosome. During fertilization, the mother always gives an X chromosome and the father gives either another X chromosome or a Y chromosome. Therefore, all humans have at least one X chromosome.
What does it means when the X Chromosome is higher than the Y Chromosome?
The X chromosome is stood on a yellow pages
When a x chromosome is add is added to your mothers x chromosome what will you be?
A Male
What chromosome does hemophilia come from?
The X 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.
Which chromosomes from the sperm is necessary to produce a male?
x chromosome...!
In humans a male has?
One X chromosome and one Y chromosome, which determines male sex characteristics.
On which chromosome is the human gene known as Factor X located?
The Factor X gene is said to be located on the X chromosome. Females have two X chromosomes, whereas males only have one. The other chromosome they have is a Y chromosome.
Where on the X chromosome does Fragile X take place?
Fragile X is a result of a mutation in the FMR1 gene on the X chromosome.
