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Why does the y chromosome not carry any alleles?
The Y chromosome is smaller than the X chromosome and contains fewer genes. It carries the genes necessary for determining male sex and some other genes, but it lacks many of the genes present on the X chromosome. This is why the Y chromosome does not carry any alleles in the same way that the X chromosome does.
What sex chromosome does a human egg cell contain?
The sex chromosome typically carried by an ovum is X-chromosome. The sperm may carry either x or y sex chromosome.
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.
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.
What percent of sperm carry the X-X chromosome pair?
Zero %; as in No Such exists. Meiotic Cells [Eggs and Sperm] each contain a single chromosome (n).
Why does the y chromosome not carry any alleles?
The Y chromosome is smaller than the X chromosome and contains fewer genes. It carries the genes necessary for determining male sex and some other genes, but it lacks many of the genes present on the X chromosome. This is why the Y chromosome does not carry any alleles in the same way that the X chromosome does.
What sex chromosome does a human egg cell contain?
The sex chromosome typically carried by an ovum is X-chromosome. The sperm may carry either x or y sex chromosome.
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.
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.
What alleles do females carry but not males?
Females carry two copies of the X chromosome, while males carry one X and one Y chromosome. This means that females can have two different alleles for genes located on the X chromosome, while males can only have one allele for those genes.
What chromosomes carry triple x syndrome?
chromosome 21
What are the x and y chromazones?
The Y chromosome is the male sex chromosome, but males also carry a X chromosome from their mother. XY. The female sex chromosome is the Y chromosome; YY is female. ( generally, as sex chromosome number in both sexes can vary )
What chromosomes has been determined to carry this gene in hemophilia?
the X chromosome
What is the probabitily that a human sperm cell will carry an x chromosome?
50%
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.
What percent of sperm carry the X-X chromosome pair?
Zero %; as in No Such exists. Meiotic Cells [Eggs and Sperm] each contain a single chromosome (n).
How many chromosome do you have when you have fragile x syndrome?
Fragile X syndrome is caused by a mutation that prevents the Fragile X mental retardation (Fmr-1) gene from being transcribed. This gene is located on the X chromosome (the sex chromosome). Since males only carry one of these chromosomes, they are twice as likely to be affected by the mutation than females.
