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回复 白巧克力 的帖子0 {& V H% r A$ e
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The two main chromatin states are heterochromatin and
W3 ?: d7 O J, Ueuchromatin. Heterochromatin exists in various tightly bound
4 @3 E) C$ q; {conformations. Euchromatin is less condensed and most often6 c' Q1 x% y( L( x6 I4 }2 s
associated with transcriptional activation. Euchromatic genes0 u) Y" y; S9 O/ v
may be silenced and even exhibit a variegated phenotype when
; G1 O. Y1 g! a$ z2 M$ G( mjuxtaposed to heterochromatic sequences following chromosomal
1 X5 ~. a6 ?( d: a2 Nrearrangement or transposition
1 m% `8 G, y, [6 B6 j+ Z! P0 a这是一整段。本文讲染色体包装的 |
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