During DNA Replication

question 84

Multiple Choice

During DNA replication,

• A) all methylation of the DNA is lost at the first round of replication.
• B) DNA polymerase is blocked by methyl groups, and methylated regions of the genome are therefore left uncopied.
• C) methylation of the DNA is maintained because methylation enzymes act at DNA sites where one strand is already methylated and thus correctly methylates daughter strands after replication.
• D) methylation of the DNA is maintained because DNA polymerase directly incorporates methylated nucleotides into the new strand opposite any methylated nucleotides in the template.
• E) methylated DNA is copied in the cytoplasm, and unmethylated DNA is copied in the nucleus.

Identify appropriate interventions when a patient on continuous cardiac monitoring shows irregular rhythms or unexpected outcomes.

Apply appropriate strategies for troubleshooting when an ECG cannot be interpreted, including electrode inspection and patient positioning.

Comprehend the rationale for using multiple electrodes in different positions around the patient's body during an ECG to obtain a holistic view of cardiac activity.

Implement effective strategies to reduce artifact in ECG tracings for accurate diagnosis, especially in patients with symptoms like syncope.

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Definitions:

World's Population

The total number of humans currently living on Earth.

Deleterious Alleles

Genetic variants that negatively affect the fitness or survival of an organism, often leading to disease or reduced lifespan.

Founder Effect

A reduction in genetic variation that occurs when a new population is established by a very small number of individuals from a larger population.

Isolated Populations

Groups of organisms that are separated from exchanging genetic material with other organisms of the same species, often leading to speciation.