Q:

Is Tay Sachs disease dominant or recessive?

A:

Quick Answer

According to WebMD, Tay Sachs disease is an autosomal recessive disease, meaning both parents need to have a copy of the mutated gene in order to pass it onto their offspring. Tay Sachs disease is a very rare genetic disorder, usually affecting those of Ashkenazi Jewish heritage.

Know More

Full Answer

Tay Sachs disease gradually destroys nerve cells in the brain and spinal cord, according to the National Library of Medicine. As more neurons are destroyed, motor functions are affected and eventually deteriorate entirely in the form of paralysis. Intellectual development is also stunted. The most common form of this disease begins to affect children as young as 3 to 6 months of age.

Learn more about Molecular Biology & DNA

Related Questions

  • Q:

    What is the "Law of Segregation" in biology?

    A:

    In biology, the law of segregation explains how the offspring of parents with similar characteristics sometimes have offspring with a different characteristic. It is one of the rules regarding genetics discovered by Gregor Mendel in the 1860s. According to this law, the two alleles, which form a gene, separate during the formation of the reproductive cells and recombine as the two parent cells join, determining the genetics of an offspring.

    Full Answer >
  • Q:

    What is the difference between heredity and genetics?

    A:

    Heredity refers to the passing of characteristics from parents to offspring. Genetics is the study of heredity, genes and variations in organisms. Heredity occurs in plants, animals, bacteria and fungi.

    Full Answer >
  • Q:

    What is inherited variation?

    A:

    In the field of biology, inherited variation refers to genes and genetic information transferring from both parents to offspring. Biological variation occurs in all species, including humans, plants and other animals. Offspring of all living species derives approximately 50 percent of each parent's genes, giving them resemblance to the parents while displaying novel traits, features and characteristics as well, as noted in a report by the BBC.

    Full Answer >
  • Q:

    How does DNA copy itself?

    A:

    DNA copies itself through the process of DNA replication. This process occurs before a cell can divide, so that the new cell obtains a fully functional strand of DNA. In eukaryotes, DNA replication occurs during the S phase of the cell cycle.

    Full Answer >

Explore