Sentences with phrase «pair of chromosomes»

DNA makes up the 23 pairs of chromosomes in the human body.

The 46 pairs of chromosomes then divide into 2; leaving 23 pairs.

Way back in the evolutionary past, there was no Y, just a regular pair of chromosomes.

How many pairs of chromosomes are in found in most humans?

Trisomies can occur with other pairs of chromosomes as well, giving rise to different disorders, but Down's is defined as the one affecting the 21st pair only.

The germline nucleus contains 5 pairs of chromosomes which encode the heritable information passed down from one sexual generation to the next.

Both sex chromosomes evolved from an ordinary pair of chromosomes more than 200 million years ago (Science, 29 October, 1999, p. 964).

And the changes are handed down: While most of the chimp genome's 24 pairs of chromosomes undergo a genetic reshuffling during the production of sperm and eggs, with genes swapped between the two copies, there is only one Y chromosome and thus no mixing — the Y is transmitted intact.

In the second stage of meiosis, the single pairs of chromosomes — two sister chromatids joined in the middle — separate and the egg cell divides again in the same way, leaving a single mature egg cell with one copy of each chromosome.

Spindle fibers (gold above, red at right) align pairs of chromosomes (blue) and then separate the genetic material into two daughter cells (shown forming, above).

Sulforaphane seems to work by interrupting the tiny microtubules that normally pull pairs of chromosomes apart when cells divide.

After transforming MDS skin cells into iPSCs, the team looked at the number and structure of all 23 pairs of chromosomes inside each cell.

Before about 200 million years ago, when mammals were relatively new on Earth, early versions of the se - x chromosomes, X and Y, were just like other pairs of chromosomes: with each generation, they swapped a few genes so that offspring were a mix of their parents» genes.

Defective genes can be caused by mutations in either the maternally - inherited mitochondrial genome (mtDNA) or more frequently, the genes located on the autosomes, the 23 pairs of chromosomes which are responsible for all traits and all other genetic diseases.

At conception it has 23 pairs of chromosomes, and 50,000 genes from each parent.

Momoya — As a biologist I can tell you that when the sperm [containing 23 pairs of chromosomes] fuses with the ovum / egg [containing 23 pairs of chromosomes] there are 46 pairs of chromosomes — right?

Named for the 23 pairs of chromosomes that make up humankind, this company — which touts its «FDA standards for clinical and scientific validity» — offers genetic health risk and carrier status reports, gives ancestry percentages down to 0.1 percent, and the opt - in ability to join the DNA Relative Finder.

These cells are sent to a reference lab and analyzed to determine which embryos have the normal 22 pairs of chromosomes (autosomes), as well as the pair of chromosomes that determine the sex of the baby, for a total of 23 pairs.

Genetically healthy people have 23 pairs of chromosomes.

Using highly sensitive molecular genetic techniques, CCS reliably detects all 23 pairs of chromosomes.

Human cells normally contain 23 pairs of chromosomes, for a total of 46.

In turn, apes have 24 pairs of chromosomes, for a total of 48.

When Pearse put the first one under her microscope, she found that, as is common in cancer, its chromosomes were mangled: One pair of chromosomes was missing entirely, one lacked a partner, one was chomped off, and some leftover bits were jammed together into extra chromosomes.

I clicked on the section «Genetics 101» and watched one of the animated videos: A banana has 11 pairs of chromosomes, one video said.

These people lack approximately 40 - 60 genes within a small region in one of the pairs of chromosome 22.

Gene sequencing revealed two regions associated with major depressive disorder on one of the 23 pairs of chromosomes.

As science looks more closely, however, it becomes increasingly clear that a pair of chromosomes do not always suffice to distinguish girl / boy — either from the standpoint of sex (biological traits) or of gender (social identity).

The goal, said Singh, was to isolate each of tomentella's 39 chromosomes, adding one at a time to soybean's 20 pairs of chromosomes.

During cell division, or mitosis, the 23 pairs of chromosomes must line up and divide perfectly to yield 46 individual chromosomes, with exactly half — one chromosome from each pair — going to each of two daughter cells.

The human genome is a sequence of 6 billion chemical letters, called base - pairs, divided up among 23 pairs of chromosomes.

Thus while trying to reclassify species in a family of South American rodents called Octodontoidea, evolutionary biologist Milton Gallardo of the Universidad Austral de Chile was surprised to find in 1990 that a 100 - gram mouse, called Tympanoctomys barrerae, had 51 pairs of chromosomes.

By 1997, Gallardo and his colleagues had established that species in this family had about 26 pairs of chromosomes each, leaving him to suspect that the only way Tympanoctomys could wind up with twice that many pairs was through some sort of doubling of the genome.

She is born with 23 pairs of chromosomes: one set from her mother and one from her father.

The genome of the Chinese hamster is composed of eleven pairs of chromosomes.

In March's Discover Dialogue: The Caenorhabditis elegans worm has six pairs of chromosomes.

The sum total of the DNA contained in the 23 pairs of chromosomes is the genome.

Because a trisomic cell contains two copies of a chromosome from one parent and one copy of that chromosome from the other parent, one in three embryos which revert from trisomy to disomy will end up with a pair of chromosomes from just one parent.

Now, the view of the ancient genome is so clear that Meyer and his colleagues were able to detect for the first time that Denisovans, like modern humans, had 23 pairs of chromosomes, rather than 24 pairs, as in chimpanzees.

For cell division to be successful, pairs of chromosomes have to line up just right before being swept into their new cells, like the opening of a theater curtain.

A pair of research teams recently linked large - scale mutations on one of the body's 23 pairs of chromosomes (which carry cells» genetic code) to autism, a finding that helps shed light on a disorder whose genetic underpinnings have confounded scientists for decades.

The condition in which a child inherits a pair of chromosomes from just one parent is called uniparental disomy.

One strategy makes use of subtle genetic variations that exist between a mother's pairs of chromosomes.

The mistakes often happen during an exchange of genetic material between the partners of each pair of chromosomes, known as crossing over, which occurs in the cells of the testes and ovaries destined to become sperm or eggs.

Genetic information passes to a child in a pair of chromosomes — one from the father and one from the mother.

Normally, each cell in the human embryo should contain 23 pairs of chromosomes (22 pairs of chromosomes and one pair of sex chromosomes), but some can carry multiple copies of chromosomes, which can lead of developmental disorders.

A nucleotide is the basic unit of nucleic acid, which is found in the 23 pairs of chromosomes in the human body.

Our genome is approximately 3,000,000,000 base pairs long and is packaged into 23 pairs of chromosomes.

(The human genome is a person's entire bundle of DNA divided unevenly among 23 pairs of chromosomes.)