They also found that after the extra chromosome was removed, genes tied to nervous system development were more active and ...

Back in 1900 the life expectancy of people with Down Syndrome was 9 years. In 1984, it was 28 years, today it's leveled off ...

The accurate distribution of chromosomes in an oocyte is essential for the correct transmission of genetic information to the ...

The allele frequency represents the incidence of a gene variant in a population. Alleles are variant forms of a gene that are located at the same position, or genetic locus, on a chromosome.

Often, it is impossible to determine which two alleles of a gene are present within an organism's chromosomes based solely on the outward appearance of that organism. However, an allele that is ...

The totality of genes encoded on a human’s 46 chromosomes is known as their genotype. But not all gene variations will be expressed. For instance, you might have one allele for brown eyes and another ...

Gene editing techniques may eventually ... More information: Ryotaro Hashizume et al, Trisomic rescue via allele-specific multiple chromosome cleavage using CRISPR-Cas9 in trisomy 21 cells ...

Have you ever wondered why we carry two copies of each chromosome in all of our cells? During reproduction, we receive one from each of our parents. This means that we also receive two copies, or ...

This means that we also receive two copies, or alleles, of each gene -- one allele per chromosome or parent. Both alleles are able to produce messenger RNA, which is the recipe needed to make ...

And they can pick and choose different ones along the chromosome, sometimes using the gene (called an allele) from their own mother, other times using the allele from their father. The other ...

Japanese researchers have successfully eliminated the extra chromosome responsible for Down syndrome using CRISPR gene ...