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Results 1 - 10 of 670 for Chromosome
  1. What is a chromosome?: MedlinePlus Genetics 
    ... molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many ... around proteins called histones that support its structure. Chromosomes are not visible in the cell’s nucleus— ...
    https://medlineplus.gov/genetics/understanding/basics/chromosome - Genetics
  2. Can changes in the number of chromosomes affect health and development?: MedlinePlus Genetics 
    Human cells normally contain 23 pairs of chromosomes, for a total of 46 chromosomes in each cell . A change in the number of chromosomes can cause problems with growth, development, and ...
    https://medlineplus.gov/.../chromosomalconditions - Genetics
  3. Can changes in the structure of chromosomes affect health and development?: MedlinePlus Genetics 
    Changes that affect the structure of chromosomes can cause problems with growth, development, and function of the body's systems. These changes can affect many genes along the chromosome ...
    https://medlineplus.gov/.../mutationsanddisorders/structuralchanges - Genetics
  4. How many chromosomes do people have?: MedlinePlus Genetics 
    ... humans, each cell normally contains 23 pairs of chromosomes, for a total of 46. Twenty-two of ... males and females. The 23rd pair, the sex chromosomes, differ between males and females. Females have two ...
    https://medlineplus.gov/.../understanding/basics/howmanychromosomes - Genetics
  5. Ring chromosome 14 syndrome 
    Ring chromosome 14 syndrome is a condition characterized by seizures and intellectual disability. Recurrent seizures (epilepsy) develop in infancy or early ...
    https://medlineplus.gov/.../condition/ring-chromosome-14-syndrome - Genetics
  6. Y chromosome infertility 
    Y chromosome infertility is a condition that affects the production of sperm and causes male infertility, which means it is difficult or impossible for ...
    https://medlineplus.gov/genetics/condition/y-chromosome-infertility - Genetics
  7. Ring chromosome 20 syndrome 
    Ring chromosome 20 syndrome is a condition that affects the normal development and function of the brain. The most ... epilepticus also appear to be characteristic of ring chromosome 20 syndrome. These episodes involve confusion and behavioral ...
    https://medlineplus.gov/.../condition/ring-chromosome-20-syndrome - Genetics
  8. Chromosome 1 
    Humans normally have 46 chromosomes in each cell, divided into 23 pairs. Two copies of chromosome 1, one copy inherited from each parent, form one of the pairs. Chromosome 1 is the largest human chromosome, spanning about ...
    https://medlineplus.gov/genetics/chromosome/1 - Genetics
  9. Chromosome 2 
    Humans normally have 46 chromosomes in each cell, divided into 23 pairs. Two copies of chromosome 2, one copy inherited from each parent, form one of the pairs. Chromosome 2 is the second largest human chromosome, spanning ...
    https://medlineplus.gov/genetics/chromosome/2 - Genetics
  10. Chromosome 21 
    Humans normally have 46 chromosomes in each cell, divided into 23 pairs. Two copies of chromosome 21, one copy inherited from each parent, form one of the pairs. Chromosome 21 is the smallest human chromosome, spanning about ...
    https://medlineplus.gov/genetics/chromosome/21 - Genetics
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