y chromosome
Word Rarity
Rare
Frequency: Zipf frequency 3.47 in modern English
23
Scrabble Score
11
Letters
3
Syllables
8
Unique Chars
Meaning
noun
A mammalian sex chromosome: in the XY sex-determination system, cells of females typically have a pair of X chromosomes, while cells of males typically have an X and a Y.
Etymology
Named by Nettie Stevens in 1905 using the next letter in sequence following the naming by Hermann Henking in 1890 of the X chromosome. The brief resemblance in the appearance of the X and Y chromosomes to the letters "X" and "Y" respectively during cell division is entirely coincidental.