telomere
A loss of a complete chromosome is called monosomy. This occurs when a cell only has one copy of a particular chromosome instead of the usual two copies.
The condition in which a diploid cell is missing a chromosome or has an extra chromosome is called aneuploidy.
The chromosome carried only by the sperm is called the Y chromosome, which determines the male gender when combined with the X chromosome from the egg during fertilization.
A single arm of a chromosome is called a chromatid. During cell division, each chromosome consists of two sister chromatids that are joined together at a region called the centromere.
how could a zygote end up with an extra chromosome Either the egg or the sperm doesn't divide equally.
A loss of a complete chromosome is called monosomy. This occurs when a cell only has one copy of a particular chromosome instead of the usual two copies.
The condition in which a diploid cell is missing a chromosome or has an extra chromosome is called aneuploidy.
The chromosome carried only by the sperm is called the Y chromosome, which determines the male gender when combined with the X chromosome from the egg during fertilization.
it is called a sister chromosome :)
In one kind of abnormal chromosome inheritance called Down syndrome, a child has three copies of Chromosome 21!
An X chromosome is known as an X chromosome based on its shape, which resembles an X. The Y chromosome resembles a Y.
The singular form of chromosomes is chromosome.
A single arm of a chromosome is called a chromatid. During cell division, each chromosome consists of two sister chromatids that are joined together at a region called the centromere.
I thought they were acrocentric (centromere positioned so close to the end of the chromosome that the short arm of the chromosome is not visible) rather than telocentric (centromere located completely at the terminal end of the chromosome).
how could a zygote end up with an extra chromosome Either the egg or the sperm doesn't divide equally.
translocation
Mutation