Thomas Hunt Morgan

The egg of every species of animal or plant carries a definite number of bodies called chromosomes. The sperm carries the same number. Consequently, when the sperm unites with the egg, the fertilized egg will contain the double number of chromosomes.

American Scientist

Jack W. Szostak

What do cells do when they see a broken piece of DNA? Cells don't like such breaks. They'll do pretty much anything they can to fix things up. If a chromosome is broken, the cells will repair the break using an intact chromosome.

Canadian Scientist

María Blasco Marhuenda

We see that mice that undergo caloric restriction show a lower telomere shortening rate than those fed with a normal diet. These mice therefore have longer telomeres as adults, as well as lower rates of chromosome anomalies.

Spanish Scientist

Kenneth R. Miller

Although each egg cell produced by a woman carries a single X chromosome, the sperm cells produced by a man carry either an X or a Y. This means, in very simple terms, that the sperm cell determines a baby's sex.

Dean Ornish

Telomeres are the ends of our chromosomes that control how long we live. As telomeres become shorter, then cells age and die more quickly. In simple terms, as your telomeres get shorter, your life gets shorter.

American Educator

Christiane Nusslein-Volhard

In mathematics and science, there is no difference in the intelligence of men and women. The difference in genes between men and women is simply the Y chromosome, which has nothing to do with intelligence.

German Scientist

Elizabeth Blackburn

If we think of our chromosomes - they carry our genetic material - as being like shoelaces, I work on the plastic tips at the end that protect them.

Australian Scientist

Hope Jahren

Men and women study things differently, and it's not because of our chromosomes. It's a product of our cultural conditioning.

Bella Abzug

The test for whether or not you can hold a job should not be the arrangement of your chromosomes.

American Lawyer

Agnes Varda

I think I was a feminist before being born. I had a feminist chromosome somewhere.

French Director

Imagine chromosomes as instruction manuals for life, detailing physical and growth traits.

Visualization Helps

Remember that chromosomes usually come in pairs, one from each parent.

Pairing Concept

Don't confuse numbers! Humans have 23 pairs, not 23 single chromosomes.

Chromosome Count

Understand chromosomes reside in the cell nucleus, not just anywhere in the cell.

Nucleus Specific

Chromosomes look like tiny threads under a microscope, bundled up DNA.

Thread-like Appearance

Chromosomes can be viewed as a cellular library, storing all genetic information.

Genetic Library

 make you more susceptible to infections, and slow the rate you heal. Want to live a long life? You may have to curb your chronic stress. That's because it has even been associated with shortened telomeres, the shoelace tip ends of chromosomes that measure a cell's age. Telomeres cap chromosomes

How stress affects your...

 are the dynamic scaffolding of the cell. They're called microtubules, that name's not important. But we're going to focus on the region labeled red here -- and it's the interface between the dynamic scaffolding and the chromosomes. It is obviously central to the movement of the chromosomes.

Drew Berry: Animations...

 lot of genetic analysis in addition to that we're collecting a little bit of toe skin to go to a laboratory and Adelaide where researchers are making cell cultures for further genetic work they're interested in chromosome studies that interested in Studies on the rather

Probing Platypus...

 Potatoes have 48 chromosomes, two more than people, and the same as a gorilla. You can't see these things, but they are very strange. The stars by day, I always think that's fascinating. The universe disappears. The more light there is, the less you can see.

What's invisible? More...

 Can chemistry permit making these really large molecules where we've never been before? And if we do, can we boot up a chromosome? A chromosome, by the way, is just a piece of inert chemical material. So, our pace of digitizing life has been increasing

Craig Venter: On the...

 struggling to make sense of his computational results using off-the-shelf visualization tools like this one now in this plot we're looking at one human chromosome against one chromosome from that of the lizard and each one of those dots inside of the

Intuitively visualizing...

 The DNA in our cells is packaged within chromosomes, each of which has two protective regions at the extremities called telomeres. Those shorten every time cells replicate. When telomeres become too short, cells stop replicating and die,

Why do our bodies age? -...

 to actually transplant a bacterial chromosome from one bacteria to another. I think philosophically, that was one of the most important papers that we've ever done because it showed how dynamic life was. And we knew, once that worked,

Craig Venter unveils...

 and that's the secret behind the one color blind twin. This pair, called the X and Y chromosomes, influences your biological sex. Most women have two X chromosomes while most men have one X and one Y.

Secrets of the X...

 in these volumes is all the information needed to define the genetic structure of the human species each number refers to one of our 23 chromosomes