chromosomes

1. The small bodies in the nucleus of a cell that carry the chemical “instructions” for reproduction of the cell. They consist of strands of DNA wrapped in a double helix around a core of proteins . Each species of plant or animal has a characteristic number of chromosomes. For human beings, for example, it is forty-six.

Notes

In humans, sex is determined by two chromosomes: an X-chromosome, which is female, and a Y-chromosome, which is male. ( See sex chromosomes .)

Example Sentences

Name some aspect of the horizontal polka and it has probably been discussed endlessly among human beings with two X chromosomes.

From The Daily Beast

Telomeres are the tips at the ends of our chromosomes that protect our DNA.

From The Daily Beast

But the deal brings ABC two vital assets: star-power and X chromosomes.

From The Daily Beast

And androgen insensitivity syndrome,  which can cause people born with XY chromosomes (male typical) to appear feminine.

From The Daily Beast

You appear to be a generation with a lot fewer selfish chromosomes and a lot more socially responsible DNA.

From The Daily Beast

When a cell division takes place, the nucleus breaks up into a number of thread-like portions which are known as chromosomes.

From Project Gutenberg

This is called maturation, or the maturation division, and the new cells have only half the original number of chromosomes.

From Project Gutenberg

Each of these divides again by mitosis (the chromosomes splitting lengthwise), the half or haploid number remaining.

From Project Gutenberg

That means that there is a determiner for it which is grouped with other determiners in one of the chromosomes.

From Project Gutenberg

We now know that these chromosomes are the actual controllers of heredity.

From Project Gutenberg