MARs are AT rich heterochromatic regions which contains cis-acting sites that regulate transcription, 5’ introns, and a recognition site for topoisomerase II is usually present in the MAR.

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#Unit 3. Fundamental Processes

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#Unit 13. Methods in Biology

T-test uses means and standard deviations of two samples to make a comparison. The formula for T-test is given below:

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#Unit 11. Evolution and Behavior

Large changes in quantitative traits can occur by the evolution of allele frequencies without the addition of new mutations.

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#Unit 4. Cell Communication and Cell Signaling

This is the example of post-translational modification by a lipid that mediates a ligand-receptor interaction.

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#Unit 2. Cellular Organization

if an individual has only one a gene, the excess b chains form the unusual tetramer b4, which causes hemoglobin H (HbH) disease. The complete absence of a genes results in hydrops fetalis, which is fatal at or before birth.