DNA Structure and Replication
Which of the following species lack a 'classical' histone H1?

Xenopus laevis
Arabidopsis thaliana
Saccharomyces cerevisiae
Strongylocentrotus purpuratus

ANSWER DOWNLOAD EXAMIANS APP

DNA Structure and Replication
Taylor, Woods and Hughes labeled Vicia DNA by allowing new DNA synthesis in the presence of radioactive thymine. After DNA replication (S phase of the cell cycle), it was observed that

both (a) and (b)
only one chromatid of a chromosome was labeled
neither chromatid was labeled
both chromatids of a chromosome were labeled

ANSWER DOWNLOAD EXAMIANS APP

DNA Structure and Replication
In a typical electrophoresis experiment, larger fragments of DNA move more

quickly, so they appear nearer the bottom of a gel photograph
slowly, so they appear nearer the top of a gel photograph
slowly, so they appear nearer the bottom of a gel photograph
quickly, so they appear nearer the top of a gel photograph

ANSWER DOWNLOAD EXAMIANS APP