The black sheep of the family

Take a look on baby Charlie, this cute grey and white C57BL/6 who born some weeks ago!

C57BL/6 mice, also called “Black 6 mice”, are supposed to be black but mutation of genes coding for fur colour can occasionally occur. This certainly is not common since technicians from our breeding facility told me that they already had a grey C57BL/6 mouse some years ago and it was the first time they had a grey and white mouse.

Charlie at 4 and 7 days old

Charlie at 10 and 14 days old

Mutant pup5

Charlie at 20 days old

Have you ever seen a C57BL/6 mouse with a fur colour mutation?

Sophie B.