Mammals contain eight histone H1 subtypes including somatic cell-specific subtypes as well as germ cell-specific subtypes. Which one of the following options correctly represents both subtypes of histone?
H1t and H100 , H1a-e and H1o respectively
H1a-e and H1o , H1t and H100 respectively
H1a-e and H100, H1t and H1o respectively
H1a-e and H1t, H100 and H1o respectively
Histone H1 shows appreciable variation between species. Mammals contain eight histone H1 subtypes including somatic cell-specific subtypes ( H1a-e and H1o) as well as germ cell-specific subtypes ( H1t and H100 ). The expression of each mammalian histone H1 subtype depends on the tissue type, the phase of the cell cycle and the developmental stage. Hence, the correct answer is option 2.