What is a chromosome abnormality? (7:24) Why and how did this happen? (5:12) How is the chromosome analysis that diagnosed my child differ ...

What is a chromosome? In order to answer this question in more detail, we must talk about how the human body is organized. The human body is made up ...

Below is a picture of a person’s chromosomes. This picture is called a karyotype . This picture is taken through a microscope after the white blood cells obtained from ...

Typically, humans have 46 chromosomes in every cell of their body. Those 46 chromosomes are actually 23 pairs of chromosomes. A child inherits one set of 23 chromosomes from their ...

Each chromosome is different from other chromosomes. Importantly, each chromosome carries different genes. For example, chromosome 1 carries a different set of genes than chromosome 5. Under ...

A chromosome abnormality is a change in the number or the arrangement of the chromosomes. There are many different types of possible changes. In some individuals, a piece of ...

In the grand majority of cases, chromosome abnormalities are detected by a karyotype. We call this the cytogenetic approach to diagnosing chromosome abnormalities. This approach involves examining a person’s ...

Microarray CGH is a new and powerful high-resolution test that can detect the imbalances of chromosomes in much final detail than achievable by conventional chromosome testing. A comprehensive high-resolution test for ...

Individually, specific chromosome abnormalities are rare. There may be only a handful of individuals in the medical literature that have the same chromosome change with the same breakpoints. Although ...

Whenever there is a change in the amount of genetic material, it is possible that this change will impact an individual’s health and development. This is because there are extra ...

Chromosomal abnormalities usually result from an error that occurs when an egg or sperm cell develops. It is not known why these errors occur. As far as we know, nothing that ...

The recent and rapid advances in human genetics and the human genome project have allowed us to ask questions that we couldn’t even contemplate ten years ago. In the past, ...

As discussed here , chromosomes are composed of 4 different chemical letters: A, T, C, G. The goal of the Human Genome Project was to determine the sequence of these ...

Chromosome abnormalities are a significant cause of medical and developmental problems. We believe that children's health research, and especially genetic research, is dramatically under-supported. As we advocate for additional ...