along threads called chromosomes (we humans have forty-six chromosomes, fruit flies have eight)
b1649294135membuat kutipan4 tahun yang lalu
Even when you look at a friend’s face you are seeing them in the past, because the light from their face takes a tiny fraction of a second to travel to your eye.
b1649294135membuat kutipan4 tahun yang lalu
Nowadays, we know that genes – the units of heredity – are made of stuff called DNA.
Nikolai C.membuat kutipan5 tahun yang lalu
Scientists talk about ‘forces’ and ‘bonds’ and ‘fields’, which act in their different ways both to keep the ‘footballs’ apart and to keep the components of each ‘football’ together. And it is those forces and fields that make things feel solid
Nikolai C.membuat kutipan5 tahun yang lalu
A group of atoms joined together to make a compound is called a molecule.