During metaphase ______.
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An individual heterozygous for cystic fibrosis ______.
An individual heterozygous for cystic fibrosis ______.
During metaphase ______.
During metaphase ______.
After replication, ______.
After replication, ______.
Chromatin consists of ______.
Chromatin consists of ______.
The region of DNA where RNA synthesis begins is the ______.
The region of DNA where RNA synthesis begins is the ______.
In an operon, the ______ acts as an on/off switch.
In an operon, the ______ acts as an on/off switch.
The region of DNA where RNA synthesis begins is the ______.
The region of DNA where RNA synthesis begins is the ______.
After replication, ______.
After replication, ______.
In an operon, the ______ acts as an on/off switch.
In an operon, the ______ acts as an on/off switch.