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What is an antherozoid?
An antherozoid is one of the mobile male reproductive bodies in the antheridia of cryptogams, a form of plant which reproduces using spores.
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 chromosome has to be present for a mother to have a male child?
A mother needs to contribute an X chromosome to her child for them to be male. The father contributes a Y chromosome, resulting in an XY chromosome pair which determines a male child.
What is Unit of inheritance present on the chromosome is called?
The unit of heredity found on a chromosome is called a gene.
How many gonosomes are present in the mouse sperm?
Mouse sperm typically have one gonosome, which is either an X or Y chromosome. The presence of X or Y determines the genetic sex of the offspring when combined with the egg's X chromosome.
What is an antherozoid?
An antherozoid is one of the mobile male reproductive bodies in the antheridia of cryptogams, a form of plant which reproduces using spores.
How many chromotids are present in a chromosome at the beginning of mitosis?
2
How many pairs of chromosome is present in animal cell?
23 pairs
How many chromosome are present in a humans sex cell?
23 haploid sex cells
What happened to the 24th chromosome pair present in other Primates when our ancestors became Human like as Humans have only 23 chromosome pairs?
Many scientists think the 24th chromosome fused together and that is why humans have 23.
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.
Sox 9 gene is present on which chromosome?
17
How many chromatids are present in a chromosome t the beginning of mitosis?
Two chromatids are present in a chromosome at the beginning of mitosis.
Why is the y chromosome useful for tracing ancestry?
The y-chromosome is only present in males. Men will a y-chromosome identical to that of their father, and his father, and his father, etc.
Is the color blindness gene also present on the Y chromosome?
No - the colour blindness gene is only found on the X chromosome.
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 chromosome has to be present for a mother to have a male child?
A mother needs to contribute an X chromosome to her child for them to be male. The father contributes a Y chromosome, resulting in an XY chromosome pair which determines a male child.
